2026 Iowa Senate election

Last updated

2026 Iowa Senate Election
Flag of Iowa.svg
←  2024 November 3, 20262028 →
25 of the 50 seats in the Iowa Senate
26 seats needed for a majority
  Member of the Iowa Senate Amy Sinclair (head crop).jpg Janice Weiner (head crop).jpg
Leader Amy Sinclair Janice Weiner
Party Republican Democratic
Leader sinceJanuary 9, 2023January 8, 2025
Leader's seat 12th district 45th district
Last election19 seats, 59.58%6 seats, 36.98%
Current seats3317
2026 Iowa State Senate election.svg
Results:
     Republican incumbent     Democratic incumbent
     No election
Incumbent President of the Senate

Amy Sinclair
Republican



The 2026 Iowa Senate election will be held on November 3, 2026, to elect members of the Iowa Senate from 25 odd-numbered districts. [1]

Contents

Summary of results by district

District2024 Pres. [2] IncumbentPartyElected SenatorOutcome
1stR+11.4 Catelin Drey Dem TBD
3rdR+47.3 Lynn Evans Rep TBD
5thR+41.1 Dave Rowley Rep TBD
7thR+41.2 Kevin Alons Rep TBD
9thR+42.1 Tom Shipley Rep TBD
11thR+21.9 Julian Garrett Rep TBD
13thR+40.5 Cherielynn Westrich Rep TBD
15thD+16.8 Tony Bisignano Dem TBD
17thD+35.8 Izaah Knox Dem TBD
19thR+35.2 Ken Rozenboom Rep TBD
21stR+2.2 Mike Bousselot Rep TBD
23rdR+16.4 Jack Whitver Rep TBD
25thD+27.3 Herman Quirmbach Dem TBD
27thR+29.5 Annette Sweeney Rep TBD
29thR+30.4 Sandy Salmon Rep TBD
31stD+12.3 William Dotzler Dem TBD
33rdR+28.2 Carrie Koelker Rep TBD
35thR+21.1 Mike Zimmer Dem TBD
37thD+11.3 Molly Donahue Dem TBD
39thD+22.5 Liz Bennett Dem TBD
41stR+11.3 Kerry Gruenhagen Rep TBD
43rdD+38.3 Zach Wahls Dem TBD
45thD+52.6 Janice Weiner Dem TBD
47thR+8.0 Scott Webster Rep TBD
49thD+8.7 Cindy Winckler Dem TBD

Retirements

Republicans

Democrats

District 1

The 1st district encompasses the city of Sioux City. The incumbent is Democrat Catelin Drey, who was elected in a special election on August 26, 2025, with 55.2% of the vote. [5]

District 3

The 3rd district encompasses all of Buena Vista, O'Brien, and Osceola counties, as well as parts of Cherokee and Clay counties. The incumbent is Republican Lynn Evans, who was elected in 2022 with 99.1% of the vote. [6] Evans briefly ran for the U.S. House of Representatives in Iowa's 4th congressional district, but dropped out of the race in July 2025, and announced that he would instead run for re-election. [7]

District 5

The 5th district encompasses all of Dickinson, Emmet, Kossuth, Palo Alto, and Winnebago counties, as well as part of Clay County. The incumbent is Republican Dave Rowley, who was re-elected in 2022 with 98.5% of the vote. [6] Rowley announced he would run for re-election in August 2025. [8]

District 7

The 7th district encompasses all of Monona County, most of Woodbury County, and parts of Cherokee and Plymouth counties. The incumbent is Republican Kevin Alons, who was elected in 2022 with 98.0% of the vote. [6]

District 9

The 9th district encompasses all of Adams, Cass, Montgomery, Page, and Ringgold counties, as well as most of Union County. The incumbent is Republican Tom Shipley, who was re-elected in 2022 with 76.9% of the vote. [6]

District 11

The 11th district encompasses all of Warren County and part of Marion County. The incumbent is Republican Julian Garrett, who was re-elected in 2022 with 61.6% of the vote. [6]

District 13

The 13th district encompasses all of Davis, Monroe, and Wapello counties and part of Appanoose County. The incumbent is Republican Cherielynn Westrich, who was elected in 2022 with 64.9% of the vote. [6]

District 15

The 15th district encompasses southern Des Moines, including the Des Moines International Airport. The incumbent is Democrat Tony Bisignano, who was re-elected in 2022 with 95.3% of the vote. [6]

District 17

The 17th district encompasses encompasses central Des Moines. The incumbent is Democrat Izaah Knox, who was elected in 2022 with 76.6% of the vote. [6]

District 19

The 19th district encompasses all of Jasper County as well as parts of Mahaska and Marion counties. The incumbent is Republican Ken Rozenboom, who was re-elected in 2022 with 68.6% of the vote. [6]

District 21

The 21st district encompasses the city of Ankeny. The incumbent is Republican Mike Bousselot, who was elected in 2022 with 50.9% of the vote. [6] In April 2025, Bousselot formed an exploratory committee to explore running for governor in 2026. [9]

District 23

The 23rd district encompasses parts of Dallas and Polk counties. The incumbent is Republican Jack Whitver, who was re-elected in 2022 with 58.6% of the vote. [6] On September 16, 2025, he announced that he would not seek re-election. [3]

District 25

The 25th district encompasses the city of Ames. The incumbent is Democrat Herman Quirmbach, who was re-elected in 2022 with 75.7% of the vote. [6]

District 27

The 27th district encompasses all of Grundy, Hardin, and Poweshiek counties, most of Tama County, and part of Black Hawk County. The incumbent is Republican Annette Sweeney, who was re-elected in 2022 with 66.6% of the vote. [6]

District 29

The 29th district encompasses all of Bremer, Butler, and Chickasaw counties, as well as most of Floyd County. The incumbent is Republican Sandy Salmon, who was elected in 2022 with 65.4% of the vote. [6]

District 31

The 31st district encompasses the city of Waterloo. The incumbent is Democrat William Dotzler, who was re-elected in 2022 with 96.9% of the vote. [6]

District 33

The 33rd district encompasses most of Dubuque and Jackson counties, as well as all of Jones County. The incumbent is Republican Carrie Koelker, who was re-elected in 2022 with 65.8% of the vote. [6]

District 35

The 35th district encompasses all of Clinton County and parts of Jackson and Scott counties. The incumbent is Democrat Mike Zimmer, who was elected in a 2025 special election with 51.7% of the vote. [10]

District 37

The 37th district encompasses the city of Marion. The incumbent is Democrat Molly Donahue, who was elected in 2022 with 56.0% of the vote. [6]

District 39

The 39th district encompasses southern Cedar Rapids. The incumbent is Democrat Liz Bennett, who was elected in 2022 with 64.8% of the vote. [6]

District 41

The 41st district encompasses all of Cedar County, as well as parts of Muscatine and Scott counties. The incumbent is Republican Kerry Gruenhagen, who was elected in 2022 with 58.1% of the vote. [6]

District 43

The 43rd district encompasses the cities of North Liberty, Coralville, and Solon. The incumbent is Democrat Zach Wahls, who was re-elected in 2022 with 97.5% of the vote. [6] Wahls is retiring to run for US Senate. [4]

District 45

The 45th district encompasses the city of Iowa City. The incumbent is Democrat Janice Weiner, who was elected in 2022 with 82.0% of the vote. [6]

District 47

The 47th district encompasses the cities of Bettendorf and Eldridge. The incumbent is Republican Scott Webster, who was elected in 2022 with 56.1% of the vote. [6]

District 49

The 49th district encompasses the city of Davenport. The incumbent is Democrat Cindy Winckler, who was elected in 2022 with 93.3% of the vote. [6]

Notes

    References

    1. ↑ "Iowa State Senate elections, 2026". Ballotpedia. Retrieved July 13, 2025.
    2. ↑ "Dave's Redistricting" . Retrieved July 13, 2025.
    3. 1 2 Payne, Marissa (September 16, 2025). "Jack Whitver won't seek reelection to Iowa Senate in 2026, will retire as majority leader". The Des Moines Register. Retrieved September 16, 2025.
    4. 1 2 Koons, Cami (2025-06-11). "Democrat Zach Wahls announces bid for U.S. Senate". Iowa Capital Dispatch . Retrieved 2025-06-11.
    5. ↑ Nir, David (August 26, 2025). "Iowa Democrats win massive upset to break GOP supermajority". The Downballot. Retrieved August 26, 2025.
    6. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 "2022 General Election". electionresults.iowa.gov. Iowa Secretary of State. Retrieved July 13, 2025.
    7. ↑ Gruber-Miller, Stephen (July 9, 2025). "Republican state Sen. Lynn Evans drops bid for Iowa's 4th Congressional District". The Des Moines Register. Retrieved July 13, 2025.
    8. ↑ Bower, George (August 18, 2025). "Rowley Will Run Again". Northwest Iowa Now. Retrieved August 29, 2025.
    9. ↑ "Iowa Sen. Mike Bousselot launching exploratory campaign for 2026 governor's race". KCCI . April 22, 2025. Retrieved July 13, 2025.
    10. ↑ "State Senate District 35 - Special Election". electionresults.iowa.gov. Iowa Secretary of State. Retrieved July 13, 2025.
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