2006 Iowa gubernatorial election 
 County results Congressional district results Culver:        40–50%      50–60%      60–70%Nussle:        40–50%      50–60%      60–70%      70–80%      80–90%
The 2006 Iowa  gubernatorial  election  took place on November 7, 2006. The incumbent governor , Tom Vilsack , a Democrat , had served two terms and decided not to seek a third term. In the election, Chet Culver  defeated Jim Nussle  to win the governorship, by a margin of  54% to 44%.[ 1] 
As of 2025, this was the last time a Democrat  won the governorship of Iowa. This election marks the first time Democrats won three consecutive gubernatorial elections in the state since 1966 , and the only time Democrats have ever done so for four-year terms.
Democratic primary 
Candidates 
Won primary 
Defeated in primary 
Declined to run 
Results 
Primary results by county:      Culver—71-80%
    Culver—61-70%
    Culver—51-60%
    Culver—41-50%
    Culver—31-40%
        Blouin—51-60%
    Blouin—41-50%
    Blouin—31-40%
        Fallon—61-70%
    Fallon—51-60%
    Fallon—41-50%
    
Republican primary 
Candidates 
Withdrew 
Results 
Independents 
Green 
Libertarian 
General election 
The Democratic  nominee, Iowa Secretary of State  Chet Culver , selected Iowa Secretary of Agriculture  Patty Judge  as his running mate. Judge had previously run for the Democratic nomination for Governor before dropping out to run for Lieutenant Governor. The Republican  nominee, U.S. Congressman  Jim Nussle , selected Sioux City  businessman Bob Vander Plaats  as his running mate. Vander Plaats, like Judge, had previously run for his party's nomination before dropping out to run for Lieutenant Governor .
Predictions 
Polling 
Source
 
Date
 
Chet 
Jim  
Des Moines Register [ 9] November 3, 2006
 
52% 
43%
  
Rasmussen [ 10] October 27, 2006
 
49% 
45%
  
Research 2000 [ 11] October 17, 2006
 
49% 
44%
  
Des Moines Register [ 12] October 14, 2006
 
46% 
39%
  
Rasmussen [ 13] October 5, 2006
 
42% 
42% 
 
Des Moines Register [ 14] September 17, 2006
 
44% 
44% 
 
Research 2000 [ 15] September 14, 2006
 
48% 
43%
  
Zogby /WSJ [ 16] September 11, 2006
 
43%
 
46% 
 
Rasmussen [ 17] September 1, 2006
 
42% 
40%
  
Zogby /WSJ [ 16] August 28, 2006
 
48% 
45%
  
Rasmussen [ 18] August 3, 2006
 
41% 
38%
  
Zogby /WSJ [ 16] July 24, 2006
 
45%
 
47% 
 
Zogby /WSJ [ 16] June 21, 2006
 
46%
 
47% 
 
Research 2000 [ 19] May 22–24, 2006
 
49% 
41%
  
Rasmussen [ 20] May 2, 2006
 
46% 
40%
  
Rasmussen [ 21] April 5, 2006
 
40% 
38%
  
Rasmussen [ 22] February 15, 2006
 
41% 
40%
  
Rasmussen [ 23] January 12, 2006
 
40% 
40% 
 
Rasmussen [ 24] November 28, 2005
 
41% 
38%
  
Endorsements 
Results 
Counties that flipped from Democratic to Republican 
Counties that flipped from Republican to Democratic 
By congressional district 
Culver won four of five congressional districts, including one that elected a Republican.[ 27] 
See also 
References 
^ Beaumont, Thomas (November 8, 2006). "Culver sails into victory" . Des Moines Register . Retrieved November 9,  2006 . ^ Rondeau, Sharon (November 24, 2011). "Who Disqualified 2008 Presidential Candidate Sal Mohamed, and Why?" . The Post & Email . Retrieved March 15,  2023 . ^ Dorman, Todd (November 24, 2004). "Sally Pederson won't run for governor" . Waterloo Cedar Falls Courier . Retrieved March 15,  2023 . ^ a b   "2006 Primary Election Official Results"  (PDF) . sos.state.ia.us . June 6, 2006. Archived from the original  (PDF)  on December 15, 2006.^ "2006 Governor Race Ratings for November 6, 2006"  (PDF) . The Cook Political Report . Archived from the original  (PDF)  on June 5, 2008. Retrieved October 1,  2006 .^ "Election Eve 2006: THE FINAL PREDICTIONS" . Sabato's Crystal Ball . Retrieved June 25,  2021 .^ "2006 Gubernatorial Ratings" . Senate Ratings . The Rothenberg Political Report. Retrieved June 25,  2021 .^ "Election 2006" . Real Clear Politics. Retrieved June 25,  2021 .^ Des Moines Register ^ Rasmussen ^ Research 2000 ^ Des Moines Register ^ Rasmussen  Archived  2008-10-12 at the Wayback Machine ^ Des Moines Register ^ Research 2000 ^ a b c d   Zogby/WSJ ^ Rasmussen ^ Rasmussen  Archived  September 22, 2006, at the Wayback Machine ^ Research 2000 ^ Rasmussen ^ Rasmussen  Archived  May 12, 2006, at the Wayback Machine ^ Rasmussen ^ Rasmussen ^ Rasmussen  Archived  November 21, 2008, at the Wayback Machine ^ "Chet Culver (Governor IA) | WesPAC" . November 4, 2006. Archived from the original  on November 4, 2006. Retrieved April 8,  2023 .^ "Official Results Report - Statewide Election: 2006 General Election"  (PDF) . Iowa Secretary of State . Retrieved May 30,  2006 .^ https://www.ourcampaigns.com/RaceDetail.html?RaceID=6972    
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