Nuveen Insured Dividend Advantage Municipal Fund

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q


QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number         811-09475         

        Nuveen Insured Dividend Advantage Municipal Fund         
(Exact name of registrant as specified in charter)


        333 West Wacker Drive, Chicago, Illinois 60606         

(Address of principal executive offices) (Zip code)


Jessica R. Droeger—Vice President and Secretary
        333 West Wacker Drive, Chicago, Illinois 60606         

(Name and address of agent for service)

Registrant's telephone number, including area code:         312-917-7700        

Date of fiscal year end:            10/31          

Date of reporting period:          01/31/05         

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments

Portfolio of Investments (Unaudited)
Nuveen Insured Dividend Advantage Municipal Fund (NVG)
January 31, 2005


Principal

Optional Call

Market

Amount (000)

Description(1)

Provisions*

Ratings**

Value


Alabama - 4.3% (2.9% of Total Investments)

 

$

5,310

Athens, Alabama, Water and Sewerage Revenue Warrants, Series 2002, 5.300%, 5/01/32 - MBIA Insured

5/12 at 101.00

AAA

$    5,724,552

 

3,045

Hoover, Alabama, General Obligation Bonds, Series 2003, 5.000%, 3/01/20 - MBIA Insured

3/12 at 101.00

AAA

3,297,613

 

10,000

Jefferson County, Alabama, Sewer Revenue Capital Improvement Warrants, Series 1999A, 5.375%,

2/09 at 101.00

AAA

11,075,500

   2/01/36 (Pre-refunded to 2/01/09) - FGIC Insured


Alaska - 3.4% (2.3% of Total Investments)

 

15,000

Alaska, International Airport System Revenue Bonds, Series 2002B, 5.250%, 10/01/27 - AMBAC Insured (PLG1)

10/12 at 100.00

AAA

16,108,800


Arizona - 1.1% (0.7% of Total Investments)

 

5,000

Phoenix, Arizona, Civic Improvement Corporation, Senior Lien Airport Revenue Bonds, Series 2002B,

7/12 at 100.00

AAA

5,218,050

   5.250%, 7/01/32 (Alternative Minimum Tax) - FGIC Insured


California - 9.8% (6.6% of Total Investments)

 

8,890

California, General Obligation Veterans Welfare Bonds, Series 1997BH, 5.400%, 12/01/14

12/08 at 101.00

A

9,219,019

   (Alternative Minimum Tax)

 

3,200

California, Various Purpose General Obligation Bonds, Series 2000, 5.250%, 9/01/17 - MBIA Insured

9/10 at 100.00

AAA

3,521,728

 

10,000

California, General Obligation Refunding Bonds, Series 2002, 5.000%, 2/01/23 - MBIA Insured

No Opt. Call

AAA

10,552,200

 

3,000

California, General Obligation Veterans Welfare Bonds, Series 2001BZ, 5.375%, 12/01/24

6/07 at 101.00

AAA

3,074,160

   (Alternative Minimum Tax) - MBIA Insured

 

7,935

Los Angeles, California, Certificates of Participation, Real Property Acquisition Program, Series

4/12 at 100.00

AAA

8,439,111

   2002, 5.300%, 4/01/32 - AMBAC Insured

 

1,000

Los Angeles Convention and Exhibition Center Authority, California, Certificates of Participation,

12/05 at 100.00

AAA

1,056,640

   Series 1985, 9.000%, 12/01/20 (Pre-refunded to 12/01/05)

 

7,500

Northern California Power Agency, Revenue Refunding Bonds, Hydroelectric Project 1, Series 1998A,

7/08 at 101.00

AAA

8,008,125

   5.200%, 7/01/32 - MBIA Insured

 

2,320

Sacramento Municipal Utility District, California, Electric Revenue Bonds, Series 2001P, 5.250%,

8/11 at 100.00

AAA

2,579,770

   8/15/18 - FSA Insured


Colorado - 0.9% (0.6% of Total Investments)

 

1,580

Gunnison Watershed School District RE1J, Gunnison and Saguache Counties, Colorado, General

No Opt. Call

Aaa

1,774,940

   Obligation Bonds, Series 2004, 5.000%, 12/01/15 - FSA Insured

 

Sand Creek Metropolitan District, Colorado, General Obligation Bonds, Series 2004:

1,095

   5.000%, 12/01/13 - XLCA Insured

No Opt. Call

AAA

1,211,990

1,170

   5.000%, 12/01/14 - XLCA Insured

12/13 at 100.00

AAA

1,286,251


Florida - 16.1% (10.8% of Total Investments)

 

Florida Municipal Loan Council, Revenue Bonds, Series 2003B:

2,305

   5.250%, 12/01/17 - MBIA Insured

12/13 at 100.00

AAA

2,563,736

1,480

   5.250%, 12/01/18 - MBIA Insured

12/13 at 100.00

AAA

1,641,438

 

11,600

Greater Orlando Aviation Authority, Florida, Airport Facilities Revenue Bonds, Series 2002B,

10/12 at 100.00

AAA

12,267,580

   5.125%, 10/01/21 (Alternative Minimum Tax) - FSA Insured

 

6,000

JEA, Florida, Water and Sewerage System Revenue Bonds, Series 2002A, 5.500%, 10/01/41 - MBIA

4/07 at 100.00

AAA

6,316,020

   Insured

 

8,155

Lee County, Florida, Solid Waste System Revenue Refunding Bonds, Series 2001, 5.625%, 10/01/13

10/11 at 100.00

Aaa

9,001,081

   (Alternative Minimum Tax) - MBIA Insured

 

15,000

Miami-Dade County School Board, Florida, Certificates of Participation, Series 2003A, 5.000%,

No Opt. Call

AAA

16,099,200

   8/01/27 (Mandatory put 8/01/08) - MBIA Insured

 

Miami-Dade County, Florida, Aviation Revenue Bonds, Miami International Airport, Series 2002:

7,165

   5.625%, 10/01/15 (Alternative Minimum Tax) - FGIC Insured

10/12 at 100.00

AAA

8,034,831

5,600

   5.750%, 10/01/16 (Alternative Minimum Tax) - FGIC Insured

10/12 at 100.00

AAA

6,341,944

10,000

   5.125%, 10/01/21 (Alternative Minimum Tax) - FGIC Insured

10/12 at 100.00

AAA

10,589,000

2,000

   5.250%, 10/01/22 (Alternative Minimum Tax) - FGIC Insured

10/12 at 100.00

AAA

2,132,940

 

1,000

Orange County, Florida, Sales Tax Revenue Bonds, Series 2002B, 5.000%, 1/01/25 - FGIC Insured

1/13 at 100.00

AAA

1,068,020


Georgia - 0.6% (0.4% of Total Investments)

 

1,000

Atlanta, Georgia, Water and Wastewater Revenue Bonds, Series 2004, 5.000%, 11/01/22 - FSA Insured

11/14 at 100.00

AAA

1,082,120

 

1,695

Georgia Housing and Finance Authority, Single Family Mortgage Bonds, Series 2002B-2, 5.500%,

12/11 at 100.00

AAA

1,759,817

   6/01/32 (Alternative Minimum Tax)


Illinois - 14.0% (9.4% of Total Investments)

 

10,000

Bolingbrook, Illinois, General Obligation Bonds, Series 2002A, 5.375%, 1/01/38 - FGIC Insured

1/12 at 100.00

AAA

10,941,500

 

5,000

Chicago, Illinois, General Obligation Refunding Bonds, Series 2001A, 5.500%, 1/01/38 - MBIA

1/11 at 101.00

AAA

5,577,050

   Insured

 

Chicago, Illinois, Second Lien Passenger Facility Charge Revenue Bonds, O'Hare International

Airport, Series 2001C:

4,250

   5.500%, 1/01/16 (Alternative Minimum Tax) - AMBAC Insured

1/11 at 101.00

AAA

4,664,673

4,485

   5.500%, 1/01/17 (Alternative Minimum Tax) - AMBAC Insured

1/11 at 101.00

AAA

4,922,601

4,730

   5.500%, 1/01/18 (Alternative Minimum Tax) - AMBAC Insured

1/11 at 101.00

AAA

5,190,986

2,930

   5.500%, 1/01/19 (Alternative Minimum Tax) - AMBAC Insured

1/11 at 101.00

AAA

3,199,589

 

3,000

Chicago, Illinois, General Airport Third Lien Revenue Refunding Bonds, O'Hare International

1/12 at 100.00

AAA

3,355,680

   Airport, Series 2002A, 5.750%, 1/01/17 (Alternative Minimum Tax) - MBIA Insured

 

12,765

Chicago, Illinois, Revenue Bonds, Skyway Toll Bridge, Series 1996, 5.500%, 1/01/23 (Pre-refunded

1/07 at 102.00

AAA

13,744,331

   to 1/01/07) - MBIA Insured

 

4,000

Cicero, Cook County, Illinois, General Obligation Corporate Purpose Bonds, Series 2002, 5.000%,

12/12 at 101.00

AAA

4,318,560

   12/01/21 - MBIA Insured

 

1,500

DuPage County Community School District 200, Wheaton, Illinois, General Obligation Bonds, Series

10/13 at 100.00

Aaa

1,653,780

   2003C, 5.250%, 10/01/22 - FSA Insured

 

5,000

Illinois, General Obligation Bonds, Illinois FIRST Program, Series 2002, 5.250%, 4/01/23 - FSA

4/12 at 100.00

AAA

5,495,950

   Insured

 

2,700

University of Illinois, Certificates of Participation, Utility Infrastructure Projects, Series

8/11 at 100.00

AAA

2,991,384

   2001A, 5.000%, 8/15/20 (Pre-refunded to 8/15/11) - AMBAC Insured


Indiana - 16.8% (11.3% of Total Investments)

 

3,380

Evansville, Indiana, Sewerage Works Revenue Refunding Bonds, Series 2003A, 5.000%, 7/01/20 - AMBAC

7/13 at 100.00

AAA

3,661,622

   Insured

 

Indiana Bond Bank, Special Program Bonds, Hendricks County Redevelopment District, Series 2002D:

2,500

   5.375%, 4/01/23 - AMBAC Insured

4/12 at 100.00

AAA

2,756,250

7,075

   5.250%, 4/01/26 - AMBAC Insured

4/12 at 100.00

AAA

7,671,352

7,000

   5.250%, 4/01/30 - AMBAC Insured

4/12 at 100.00

AAA

7,476,280

 

10,000

Indiana Health Facility Financing Authority, Hospital Revenue Bonds, Marion General Hospital,

7/12 at 100.00

AAA

10,542,300

   Series 2002, 5.250%, 7/01/32 - AMBAC Insured

 

25,000

Indianapolis Local Public Improvement Bond Bank, Indiana, Waterworks Project, Series 2002A,

7/12 at 100.00

AAA

26,767,250

   5.250%, 7/01/33 - MBIA Insured

 

New Albany-Floyd County School Building Corporation, Indiana, First Mortgage Bonds, Series 2002:

2,500

   5.750%, 7/15/17 - FGIC Insured

7/12 at 100.00

AAA

2,875,125

3,810

   5.750%, 7/15/20 - FGIC Insured

7/12 at 100.00

AAA

4,381,691

 

Northern Wells Community School Building Corporation, Wells County, Indiana, First Mortgage Bonds,

Series 2001:

420

   5.250%, 1/15/19 - FGIC Insured

7/12 at 100.00

AAA

459,778

430

   5.250%, 7/15/19 - FGIC Insured

7/12 at 100.00

AAA

471,783

1,675

   5.400%, 7/15/23 - FGIC Insured

7/12 at 100.00

AAA

1,853,270

 

6,960

Valparaiso Middle School Building Corporation, Indiana, First Mortgage Refunding Bonds, Series

1/13 at 100.00

AAA

7,436,482

   2002, 5.000%, 7/15/24 - MBIA Insured

 

2,490

Whitley County Middle School Building Corporation, Columbia City, Indiana, First Mortgage Bonds,

7/13 at 100.00

AAA

2,704,115

   Series 2003, 5.000%, 1/15/18 - FSA Insured


Louisiana - 0.7% (0.5% of Total Investments)

 

3,085

New Orleans, Louisiana, General Obligation Refunding Bonds, Series 2002, 5.125%, 9/01/21 - MBIA

9/12 at 100.00

AAA

3,373,293

   Insured


Massachusetts - 3.5% (2.4% of Total Investments)

 

5,000

Massachusetts, General Obligation Bonds, Consolidated Loan, Series 2004B, 5.000%, 8/01/22

8/14 at 100.00

AAA

5,545,400

   (Pre-refunded to 8/01/14) - AMBAC Insured

 

10,000

Massachusetts, Special Obligation Refunding Notes, Federal Highway Grant Anticipation Note Program,

No Opt. Call

Aaa

11,053,200

   Series 2003A, 5.000%, 12/15/13 - FSA Insured


Michigan - 2.4% (1.6% of Total Investments)

 

10,000

Detroit, Michigan, Sewerage Disposal System Revenue Bonds, Series 1999A, 5.750%, 7/01/26

1/10 at 101.00

AAA

11,371,400

   (Pre-refunded to 1/01/10) - FGIC Insured


Missouri - 2.3% (1.6% of Total Investments)

 

1,600

St. Louis County Pattonville School District R3, Missouri, General Obligation Bonds, Series 2004,

3/14 at 100.00

AAA

1,789,136

   5.250%, 3/01/19 - FSA Insured

 

8,735

St. Louis, Missouri, Airport Revenue Bonds, Airport Development Program, Series 2001A, 5.250%,

7/11 at 100.00

AAA

9,243,377

   7/01/31 - MBIA Insured


Nebraska - 0.5% (0.3% of Total Investments)

 

Municipal Energy Agency of Nebraska, Power Supply System Revenue Bonds, Series 2003A:

1,000

   5.250%, 4/01/20 - FSA Insured

4/13 at 100.00

AAA

1,108,860

1,000

   5.250%, 4/01/21 - FSA Insured

4/13 at 100.00

AAA

1,106,330


Nevada - 4.2% (2.8% of Total Investments)

 

9,810

Clark County School District, Nevada, General Obligation Bonds, Series 2002C, 5.000%, 6/15/21 -

6/12 at 100.00

AAA

10,575,965

   MBIA Insured

 

8,750

Truckee Meadows Water Authority, Nevada, Water Revenue Bonds, Series 2001A, 5.250%, 7/01/34 - FSA

7/11 at 100.00

AAA

9,319,450

   Insured


New Jersey - 1.1% (0.8% of Total Investments)

 

Bernards Township School District, Somerset County, New Jersey, General Obligation Bonds, Series

2004:

2,345

   5.000%, 1/01/15 - FGIC Insured

1/14 at 100.00

AAA

2,594,367

2,465

   5.000%, 1/01/16 - FGIC Insured

1/14 at 100.00

AAA

2,715,271


New York - 2.5% (1.7% of Total Investments)

 

10,000

Metropolitan Transportation Authority, New York, Transportation Revenue Refunding Bonds, Series

11/12 at 100.00

AAA

10,428,300

   2002A, 5.000%, 11/15/30 - FSA Insured

 

1,120

Dormitory Authority of the State of New York, FHA-Insured Mortgage Revenue Bonds, Montefiore

2/15 at 100.00

AAA

1,206,307

   Hospital, Series 2004, 5.000%, 8/01/23 - FGIC Insured


North Carolina - 0.6% (0.4% of Total Investments)

 

2,435

North Carolina Medical Care Commission, FHA-Insured Mortgage Revenue Bonds, Betsy Johnson Regional

10/13 at 100.00

AAA

2,711,421

   Hospital Project, Series 2003, 5.375%, 10/01/24 - FSA Insured


Oregon - 4.4% (3.0% of Total Investments)

 

4,725

Clackamas County School District 62, Oregon City, Oregon, General Obligation Bonds, Series 2004,

6/14 at 100.00

AAA

5,241,915

   5.000%, 6/15/15 - FSA Insured

 

Oregon, General Obligation Veterans Welfare Bonds, Series 82:

7,690

   5.375%, 12/01/31

12/11 at 100.00

AA

7,971,685

3,585

   5.500%, 12/01/42

12/11 at 100.00

AA

3,721,230

 

1,615

Oregon Department of Administrative Services, State Lottery Revenue Bonds, Series 2004A, 5.000%,

4/14 at 100.00

AAA

1,774,901

   4/01/17 - FSA Insured

 

2,085

Salem-Keizer School District 24J, Marion County, Oregon, General Obligation Bonds, Series 2004,

6/14 at 100.00

AAA

2,284,952

   5.000%, 6/15/18 - FSA Insured


Pennsylvania - 4.9% (3.3% of Total Investments)

 

4,500

Allegheny County, Pennsylvania, Airport Revenue Refunding Bonds, Pittsburgh International Airport,

No Opt. Call

AAA

5,060,565

   Series 1997A, 5.750%, 1/01/13 (Alternative Minimum Tax) - MBIA Insured (PLG2)

 

5,000

Pennsylvania Higher Educational Facilities Authority, Revenue Bonds, University of Pennsylvania,

7/08 at 100.00

AAA

5,376,700

   Series 1998, 5.500%, 7/15/38 - MBIA Insured

 

1,000

Pennsylvania Higher Educational Facilities Authority, Revenue Bonds, Lycoming College, Series

11/13 at 100.00

AA

1,091,460

   2003-AA2, 5.250%, 11/01/16 - RAAI Insured

 

Philadelphia, Pennsylvania, General Obligation Bonds, Series 2003A:

3,090

   5.250%, 2/15/14 - XLCA Insured

2/13 at 100.00

AAA

3,431,723

1,000

   5.250%, 2/15/15 - XLCA Insured

2/13 at 100.00

AAA

1,103,260

 

Philadelphia Municipal Authority, Pennsylvania, Lease Revenue Bonds, Series 2003B:

3,540

   5.250%, 11/15/16 - FSA Insured

11/13 at 100.00

AAA

3,907,771

2,000

   5.250%, 11/15/18 - FSA Insured

11/13 at 100.00

AAA

2,199,940

 

1,000

State Public School Building Authority, Pennsylvania, Lease Revenue Bonds, Philadelphia School

6/13 at 100.00

AAA

1,072,420

   District Project, Series 2003, 5.000%, 6/01/23 - FSA Insured


South Carolina - 0.8% (0.5% of Total Investments)

 

Greenville, South Carolina, Tax Increment Revenue Improvement Bonds, Series 2003:

1,000

   5.500%, 4/01/17 - MBIA Insured

4/13 at 100.00

AAA

1,136,380

2,300

   5.000%, 4/01/21 - MBIA Insured

4/13 at 100.00

AAA

2,483,885


Tennessee - 9.1% (6.1% of Total Investments)

 

10,000

Memphis-Shelby County Sports Authority, Tennessee, Revenue Bonds, Memphis Arena, Series 2002A,

11/12 at 100.00

AAA

10,578,100

   5.125%, 11/01/28 - AMBAC Insured

 

10,000

Memphis-Shelby County Sports Authority, Tennessee, Revenue Bonds, Memphis Arena, Series 2002B,

11/12 at 100.00

AAA

10,551,000

   5.125%, 11/01/29 - AMBAC Insured

 

Memphis, Tennessee, Sanitary Sewerage System Revenue Bonds, Series 2004:

1,495

   5.000%, 10/01/19 - FSA Insured

10/14 at 100.00

AAA

1,638,296

1,455

   5.000%, 10/01/20 - FSA Insured

10/14 at 100.00

AAA

1,588,307

1,955

   5.000%, 10/01/21 - FSA Insured

10/14 at 100.00

AAA

2,127,529

 

15,195

Tennessee State School Bond Authority, Higher Educational Facilities Second Program Bonds, Series

5/12 at 100.00

AAA

16,295,118

   2002A, 5.250%, 5/01/32 - FSA Insured


Texas - 27.2% (18.2% of Total Investments)

 

3,500

Dallas-Ft. Worth International Airport, Texas, Joint Revenue Refunding and Improvement Bonds,

11/11 at 100.00

AAA

3,918,250

   Series 2001A, 5.750%, 11/01/13 (Alternative Minimum Tax) - FGIC Insured

 

10,000

Gainesville Hospital District, Texas, Limited Tax General Obligation Bonds, Series 2002, 5.375%,

8/11 at 100.00

AAA

10,562,600

   8/15/32 - MBIA Insured

 

3,645

Galveston, Texas, General Obligation Refunding Bonds, Series 2001A, 5.250%, 5/01/21 - AMBAC

No Opt. Call

AAA

3,997,107

   Insured

 

Harris County Health Facilities Development Corporation, Texas, Thermal Utility Revenue Bonds, TECO

Project, Series 2003:

2,240

   5.000%, 11/15/16 - MBIA Insured

11/13 at 100.00

AAA

2,430,400

2,355

   5.000%, 11/15/17 - MBIA Insured

11/13 at 100.00

AAA

2,544,248

 

13,000

Houston Area Water Corporation, Texas, Contract Revenue Bonds, Northeast Water Purification Plant,

3/12 at 100.00

AAA

13,558,870

   Series 2002, 5.125%, 3/01/32 - FGIC Insured

 

2,500

Houston Higher Education Finance Corporation, Texas, Revenue Bonds, Rice University, Series 1999A,

11/09 at 101.00

AAA

2,715,800

   5.375%, 11/15/29

 

1,000

Houston, Texas, First Lien Combined Utility System Revenue Bonds, Series 2004A, 5.250%, 5/15/24 -

5/14 at 100.00

AAA

1,098,160

   FGIC Insured

 

4,345

San Antonio, Texas, Water System Senior Lien Revenue Refunding Bonds, Series 2002, 5.500%,

5/12 at 100.00

AAA

4,881,738

   5/15/17 - FSA Insured

 

9,145

Texas, General Obligation Bonds, Veterans Housing Assistance Program Fund II, Series 2002A-1,

6/12 at 100.00

Aa1

9,742,169

   5.250%, 12/01/22 (Alternative Minimum Tax)

 

6,370

Texas Department of Housing and Community Affairs, Residential Mortgage Revenue Bonds, Series

7/11 at 100.00

AAA

6,534,028

   2001A, 5.350%, 7/01/33 (Alternative Minimum Tax)

 

Texas Public Finance Authority, Revenue Bonds, Texas Southern University Financing System, Series

2002:

3,520

   5.125%, 11/01/20 - MBIA Insured

5/12 at 100.00

Aaa

3,845,811

3,520

   5.125%, 11/01/21 - MBIA Insured

5/12 at 100.00

Aaa

3,833,421

 

8,725

Texas Department of Housing and Community Affairs, Single Family Mortgage Bonds, Series 2002B,

3/12 at 100.00

AAA

9,050,530

   5.550%, 9/01/33 (Alternative Minimum Tax) - MBIA Insured

 

Texas Student Housing Authority, Revenue Bonds, Austin Project, Senior Series 2001A:

9,400

   5.375%, 1/01/23 - MBIA Insured

1/12 at 102.00

Aaa

10,318,098

11,665

   5.500%, 1/01/33 - MBIA Insured

1/12 at 102.00

Aaa

12,870,694

 

5,000

Texas Water Development Board, Senior Lien State Revolving Fund Revenue Bonds, Series 1999B,

1/10 at 100.00

AAA

5,431,550

   5.250%, 7/15/17

 

Williamson County, Texas, General Obligation Bonds, Series 2002:

3,500

   5.200%, 2/15/21 - FSA Insured

2/12 at 100.00

AAA

3,810,695

3,000

   5.250%, 2/15/22 - FSA Insured

2/12 at 100.00

AAA

3,292,230

7,340

   5.250%, 2/15/23 - FSA Insured

2/12 at 100.00

AAA

8,044,493

5,000

   5.250%, 2/15/25 - FSA Insured

2/12 at 100.00

AAA

5,456,250


Washington - 13.9% (9.4% of Total Investments)

 

7,675

Energy Northwest, Washington, Electric Revenue Refunding Bonds, Nuclear Project 1, Series 2002A,

7/12 at 100.00

AAA

8,616,569

   5.500%, 7/01/15 - MBIA Insured

 

6,600

Energy Northwest, Washington, Electric Revenue Refunding Bonds, Columbia Generating Station, Series

7/12 at 100.00

AAA

7,315,374

   2002B, 5.350%, 7/01/18 - FSA Insured

 

2,200

King County School District 414, Lake Washington, Washington, General Obligation Bonds, Series

12/14 at 100.00

AAA

2,423,366

   2004, 5.000%, 12/01/16 - FSA Insured

 

2,500

Port of Seattle, Washington, Revenue Refunding Bonds, Series 2002D, 5.750%, 11/01/15 (Alternative

11/12 at 100.00

AAA

2,825,175

   Minimum Tax) - FGIC Insured

 

2,200

Snohomish County School District 2, Everett, Washington, General Obligation Bonds, Series 2003B,

12/13 at 100.00

AAA

2,401,586

   5.000%, 6/01/17 - FSA Insured

 

3,255

Thurston and Pierce Counties School District, Washington, General Obligation Bonds, Yelm Community

6/13 at 100.00

Aaa

3,638,537

   Schools, Series 2003, 5.250%, 12/01/16 - FSA Insured

 

Washington State Economic Development Finance Authority, Wastewater Revenue Bonds, LOTT Project,

Series 2002:

2,000

   5.500%, 6/01/17 - AMBAC Insured

6/12 at 100.00

Aaa

2,249,760

4,325

   5.125%, 6/01/22 - AMBAC Insured

6/12 at 100.00

Aaa

4,702,400

 

15,000

Washington State Healthcare Facilities Authority, Revenue Bonds, Harrison Memorial Hospital, Series

8/13 at 102.00

AAA

15,680,100

   1998, 5.000%, 8/15/28 - AMBAC Insured

 

10,000

Washington State Healthcare Facilities Authority, Revenue Bonds, Children's Hospital and Regional

10/11 at 100.00

Aaa

10,367,600

   Medical Center, Series 2001, 5.125%, 10/01/31 - AMBAC Insured

 

5,170

Whitman County School District 267, Pullman, Washington, General Obligation Bonds, Series 2002,

6/12 at 100.00

Aaa

5,607,641

   5.000%, 12/01/20 - FSA Insured


Wisconsin - 3.5% (2.4% of Total Investments)

 

3,420

Wisconsin Housing and Economic Development Authority, Home Ownership Revenue Bonds, Series 2002E,

3/12 at 100.00

AA

3,572,908

   5.250%, 9/01/22 (Alternative Minimum Tax)

 

11,950

Wisconsin, Transportation Revenue Refunding Bonds, Series 2002-1, 5.125%, 7/01/18 - AMBAC Insured

7/12 at 100.00

AAA

13,116,796



$

649,285

Total Long-Term Investments (cost $652,232,627) - 148.6%

701,393,726



Other Assets Less Liabilities - 0.8%

3,610,308


Preferred Shares, at Liquidation Value - (49.4)%

(233,000,000)


Net Assets Applicable to Common Shares - 100%

$472,004,034


  

Forward Swap Contracts outstanding at January 31, 2005:

Swap

Unrealized

Notional

Effective

Termination

Appreciation

Amount

Date(2)

Date

(Depreciation)


Agreement with Morgan Stanley dated December 8, 2004,

to pay semi-annually the notional amount multiplied by

5.313% (annualized) and receive quarterly the notional

amount multiplied by the three-month USD-LIBOR

(United States Dollar - London Inter-Bank Offered Rates).

$2,000,000

7/18/05

7/18/35

$(87,208)

Agreement with JPMorgan dated January 11, 2005, to pay

semi-annually the notional amount multiplied by 5.235%

(annualized) and receive quarterly the notional amount

multiplied by the three-month USD-LIBOR (United States

Dollar - London Inter-Bank Offered Rates).

8,300,000

8/17/05

8/17/25

(257,100)

Agreement with Morgan Stanley dated January 31, 2005,

to pay semi-annually the notional amount multiplied by

5.058% (annualized) and receive quarterly the notional

amount multiplied by the three-month USD-LIBOR

(United States Dollar - London Inter-Bank Offered Rates).

7,500,000

8/16/05

8/16/35

(23,152)


$(367,460)


(1)  

All percentages shown in the Portfolio of Investments are based on net assets applicable to Common shares.

unless otherwise noted.

(2)  

Effective data represents the date on which both the Fund and counterparty commence interest payment

accruals on each forward swap contract.

*  

Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There

may be other call provisions at varying prices at later dates.

**  

Ratings: Using the higher of Standard & Poor's or Moody's rating.

(PLG1)  

Portion of security, with an aggregate market value of $161,088 has been pledged to collateralize the net

payment obligations under forward swap contracts.

(PLG2)  

Portion of security, with an aggregate market value of $2,080,455, has been pledged to collateralize the net

payment obligations under forward swap contracts.

Income Tax Information

The following information is presented on an income tax basis. Differences between amounts for financial statement

and federal income tax purposes are primarily due to timing differences in recognizing income on taxable market

discount securities and timing differences in recognizing certain gains and losses on security transactions.

At January 31, 2005, the cost of investments was $652,125,947.

Gross unrealized appreciation and gross unrealized depreciation of investments at January 31, 2005, were as

follows:


Gross unrealized:

   Appreciation

$50,168,457

   Depreciation

(900,678)


Net unrealized appreciation of investments

$49,267,779


Item 2. Controls and Procedures.

  1. The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).
  2. There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: EX-99 CERT Attached hereto.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)         Nuveen Insured Dividend Advantage Municipal Fund        

By (Signature and Title)*          /s/ Jessica R. Droeger--Vice President and Secretary        

Date         04/01/05        

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)*         /s/ Gifford R. Zimmerman--Chief Administrative Officer (principal executive officer)        

Date         04/01/05        

By (Signature and Title)*         /s/ Stephen D. Foy--Vice President and Controller (principal financial officer)        

Date         04/01/05        

* Print the name and title of each signing officer under his or her signature.