2026 Iowa Senate election
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25 of the 50 seats in the Iowa Senate 26 seats needed for a majority | ||||||||||||||||||||||
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 Results: Republican incumbent Democratic incumbent Vacant No election | ||||||||||||||||||||||
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| Elections in Iowa |
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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]
Summary of results by district
| District | 2024 Pres.[2] | Incumbent | Party | Elected Senator | Outcome | ||
|---|---|---|---|---|---|---|---|
| 1st | R+11.4 | Vacant[a] | TBD | ||||
| 3rd | R+47.3 | Lynn Evans | Rep | TBD | |||
| 5th | R+41.1 | Dave Rowley | Rep | TBD | |||
| 7th | R+41.2 | Kevin Alons | Rep | TBD | |||
| 9th | R+42.1 | Tom Shipley | Rep | TBD | |||
| 11th | R+21.9 | Julian Garrett | Rep | TBD | |||
| 13th | R+40.5 | Cherielynn Westrich | Rep | TBD | |||
| 15th | D+16.8 | Tony Bisignano | Dem | TBD | |||
| 17th | D+35.8 | Izaah Knox | Dem | TBD | |||
| 19th | R+35.2 | Ken Rozenboom | Rep | TBD | |||
| 21st | R+2.2 | Mike Bousselot | Rep | TBD | |||
| 23rd | R+16.4 | Jack Whitver | Rep | TBD | |||
| 25th | D+27.3 | Herman Quirmbach | Dem | TBD | |||
| 27th | R+29.5 | Annette Sweeney | Rep | TBD | |||
| 29th | R+30.4 | Sandy Salmon | Rep | TBD | |||
| 31st | D+12.3 | William Dotzler | Dem | TBD | |||
| 33rd | R+28.2 | Carrie Koelker | Rep | TBD | |||
| 35th | R+21.1 | Mike Zimmer | Dem | TBD | |||
| 37th | D+11.3 | Molly Donahue | Dem | TBD | |||
| 39th | D+22.5 | Liz Bennett | Dem | TBD | |||
| 41st | R+11.3 | Kerry Gruenhagen | Rep | TBD | |||
| 43rd | D+38.3 | Zach Wahls | Dem | TBD | |||
| 45th | D+52.6 | Janice Weiner | Dem | TBD | |||
| 47th | R+8.0 | Scott Webster | Rep | TBD | |||
| 49th | D+8.7 | Cindy Winckler | Dem | TBD | |||
Detailed results
|
District 1 • District 3 • District 5 • District 7 • District 9 • District 11 • District 13 • District 15 • District 17 • District 19 • District 21 • District 23 • District 25 • District 27 • District 29 • District 31 • District 33 • District 35 • District 37 • District 39 • District 41 • District 43 • District 45 • District 47 • District 49 |
District 1
The 1st district encompasses the city of Sioux City. The incumbent was Republican Rocky De Witt, who died on June 25, 2025.[3] De Witt's successor will be determined in a special election on August 26, 2025.[4]
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.[5] 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.[6]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5] In April 2025, Bousselot formed an exploratory committee to explore running for governor in 2026.[7]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[8]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
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.[5]
Notes
- ^ Republican Rocky De Witt died on June 25, 2025. A special election will be held on August 26, 2025, to elect a new senator.
References
- ^ "Iowa State Senate elections, 2026". Ballotpedia. Retrieved July 13, 2025.
- ^ "Dave's Redistricting". Retrieved July 13, 2025.
- ^ Breen, Matt (June 26, 2025). "Iowa State Senator Rocky De Witt dies after battle with pancreatic cancer". KTIV. Retrieved July 13, 2025.
- ^ Mahon, Reilly (July 8, 2025). "Iowa Senate District 1 seat voting begins next month". KCAU-TV. Retrieved July 13, 2025.
- ^ a b c d e f g h i j k l m n o p q r s t u v w "2022 General Election". electionresults.iowa.gov. Iowa Secretary of State. Retrieved July 13, 2025.
- ^ 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.
- ^ "Iowa Sen. Mike Bousselot launching exploratory campaign for 2026 governor's race". KCCI. April 22, 2025. Retrieved July 13, 2025.
- ^ "State Senate District 35 - Special Election". electionresults.iowa.gov. Iowa Secretary of State. Retrieved July 13, 2025.