# List of members of the 90th session of the Iowa Senate

The Iowa Senate is the upper house of the Iowa General Assembly, the legislature of the U.S. state of Iowa. One State Senator is elected from each of the state's 50 electoral districts, with each Senate district containing two House of Representatives districts. The 2023–25 term is part of the 90th General Assembly. As of January 28, 2025, 16 of those seats are held by Democrats and 34 by Republicans. The presiding officer is the President of the Senate, who is chosen by the majority party and elected by the Senate. In addition, senators elect a President pro tempore, chosen in the same manner as the President, and the respective party caucuses elect a majority and minority leader, a majority and minority whip, and assistant party leaders.
Senators serve for four-year terms and are elected in even-numbered years, with half of the Senate elected every two years in the general election on election day, as part of the presidential and midterm elections. Newly elected senators are sworn in and begin work on the second Monday of January. Should a senator resign from office before his or her term expires, the governor calls a special election to replace the senator. Senators are not term-limited.
Senators generally serve on several standing committees and often serve on joint appropriations subcommittees, permanent statutory committees and various boards and commissions.

## Party composition

Party composition as of January 28, 2025. :
| Affiliation | Members |
| Republican | 34 |
| Democratic | 16 |
| Total | 50 |

## Leadership

Senate leadership as of January 9, 2023. :
| Position | Name | Party | District |
| President of the Senate | Amy Sinclair | Republican | 12 |
| President pro tempore | Brad Zaun | Republican | 22 |
| Majority Leader | Jack Whitver | Republican | 23 |
| Minority Leader | Zach Wahls | Democratic | 43 |

## Senators

Iowa senators as of July 10, 2023 :
| District | Jurisdiction(s) represented | Senator | Party | First elected | Standing committee leader | Appropriations subcommittee member |
| 1 | Woodbury, | Rocky De Witt | Republican | 2022 | N/A | Transportation, Infrastructure, and Capitals |
| 2 | Plymouth and Sioux | Jeff Taylor | Republican | 2020 | Education (Vice Chair) | Education (Chair) |
| 3 | Osceola, O'Brien, Clay, Cherokee, and Buena Vista | Lynn Evans | Republican | 2022 | | Education |
| 4 | Calhoun, Pocahontas, Sac, and Webster | Tim Kraayenbrink | Republican | 2014 | Appropriations (Chair), Technology (Vice Chair) | |
| 5 | Clay, Dickinson, Emmet, Kossuth, Palo Alto and Winnebago | Dave Rowley | Republican | 2020 | | Administration and Regulation Appropriations (Chair) |
| 6 | Audubon, Carroll, Crawford, Ida, and Shelby | Jason Schultz | Republican | 2014 | State Government (Chair) | |
| 7 | Cherokee, Monona, Plymouth, and Woodbury | Kevin Alons | Republican | 2022 | | Health and Human Services |
| 8 | Fremont, Harrison, Mills, and Pottawattamie, | Mark Costello | Republican | 2014 | Ethics (Vice Chair) | Health and Human Services (Chair) |
| 9 | Adams, Cass, Montgomery, Page, Ringgold, Taylor, and Union | Tom Shipley | Republican | 2014 | Ethics (Chair), Natural Resources and Environment (Vice Chair) | Agriculture and Natural Resources |
| 10 | Pottawattamie | Dan Dawson | Republican | 2016 | Ways and Means (Chair) | |
| 11 | Marion and Warren | Julian Garrett | Republican | 2013 | Judiciary (Vice Chair) | Justice System (Chair) |
| 12 | Adair, Appanoose, Clarke, Dallas, Decatur, Lucas, Madison, Union and Wayne | Amy Sinclair | Republican | 2012 | Government Oversight (Chair), Rules and Administration (Vice Chair) | |
| 13 | Appanoose, Davis, Monroe, and Wapello | Cherielynn Westrich | Republican | 2022 | | Justice System (Vice Chair) |
| 14 | Dallas | Sarah Trone Garriott | Democratic | 2020 | Health and Human Services (Ranking Member) | Health and Human Services |
| 15 | Polk | Tony Bisignano | Democratic | 2014 | State Government (Ranking Member), Agriculture (Ranking Member) | |
| 16 | Dallas and Polk | Claire Celsi | Democratic | 2018 | Government Oversight (Ranking Member) | Administration and Regulation (Ranking Member) |
| 17 | Polk | Izaah Knox | Democratic | 2022 | Natural Resources and Environment (Ranking Member) | Education |
| 18 | Polk | Janet Petersen | Democratic | 2012 | Appropriations (Ranking Member) | Transportation, Infrastructure, and Capitals (Ranking Member) |
| 19 | Jasper, Mahaska, and Marion | Ken Rozenboom | Republican | 2012 | Agriculture (Vice Chair), Education (Chair) | |
| 20 | Polk | Nate Boulton | Democratic | 2016 | Judiciary (Ranking Member) | Justice System |
| 21 | Polk | Mike Bousselot | Republican | 2022 | Commerce (Vice Chair) | Transportation, Infrastructure, and Capitals (Vice Chair) |
| 22 | Polk | Brad Zaun | Republican | 2004 | Judiciary (Chair) | |
| 23 | Dallas and Polk | Jack Whitver | Republican | 2011 | Rules and Administration (Chair) | |
| 24 | Boone, Dallas, Greene, Guthrie, and Story | Jesse Green | Republican | 2020 | Local Government (Chair) | |
| 25 | Story | Herman Quirmbach | Democratic | 2002 | Education (Ranking Member) | Economic Development |
| 26 | Marshall and Story | Jeff Edler | Republican | 2016 | Health and Human Services (Chair) | Health and Human Services (Vice Chair) |
| 27 | Black Hawk, Grundy, Hardin, Poweshiek, and Tama | Annette Sweeney | Republican | 2018 | Natural Resources and Environment (Chair) | Agriculture and Natural Resources (Vice Chair) |
| 28 | Franklin, Hancock, Hamilton, Humbolt, and Wright | Dennis Guth | Republican | 2012 | N/A | Administration and Regulation (Vice Chair) |
| 29 | Bremer, Butler, Chickasaw, and Floyd | Sandy Salmon | Republican | 2022 | Veterans Affairs (Vice Chair) | Justice System |
| 30 | Cerro Gordo, Floyd, Mitchell, and Worth | Vacant | | | | |
| 31 | Black Hawk | William Dotzler | Democratic | 2002 | Veterans Affairs (Ranking Member) | Economic Development (Ranking Member) |
| 32 | Allamakee, Clayton, Fayette, Howard, and Winneshiek | Mike Klimesh | Republican | 2020 | Government Oversight (Vice Chair); Transportation (Chair) | Health and Human Services |
| 33 | Dubuque, Jones and Jackson | Carrie Koelker | Republican | 2018 | Was and Means (Vice Chair) | Transportation, Infrastructure, and Capitals (Chair) |
| 34 | Black Hawk, Buchanan, Delaware, Dubuque, and Fayette | Dan Zumbach | Republican | 2012 | Appropriations(Vice Chair) | Agriculture and Natural Resources (Chair) |
| 35 | Clinton, Jackson, and Scott | Vacant | | | | |
| 36 | Dubuque | Pam Jochum | Democratic | 2008 | Ways and Means(Ranking Member) | Administration and Regulation |
| 37 | Linn | Molly Donahue | Democratic | 2022 | Workforce (Ranking Member) | Health and Human Services (Ranking Member) |
| 38 | Benton, Black Hawk, and Tama | Eric Giddens | Democratic | 2019 | Commerce (Ranking Member) | Agriculture and Natural Resources (Ranking Member) |
| 39 | Linn | Liz Bennett | Democratic | 2022 | Technology (Ranking Member) | Transportation, Infrastructure, and Capitals |
| 40 | Linn | Todd Taylor | Democratic | 2018 | Transportation (Ranking Member) | Justice System (Ranking Member) |
| 41 | Cedar, Muscatine, and Scott | Kerry Gruenhagen | Republican | 2022 | | Economic Development |
| 42 | Benton and Linn | Charlie McClintock | Republican | 2022 | Workforce (Vice Chair) | Justice System |
| 43 | Johnson | Zach Wahls | Democratic | 2018 | Rules and Administration (Ranking Member) | |
| 44 | Henry, Jefferson, Keokuk, Mahaska, and Van Buren | Adrian Dickey | Republican | 2021 | Workforce (Chair); Transportation (Vice Chair) | Economic Development |
| 45 | Johnson | Janice Weiner | Democratic | 2022 | Local Government (Ranking Member) | Agriculture and Natural Resources |
| 46 | Iowa, Johnson and Washington | Dawn Driscoll | Republican | 2020 | Agriculture (Chair) | |
| 47 | Scott | Scott Webster | Republican | 2022 | | Administration and Regulation |
| 48 | Des Moines, Henry, Louisa, and Muscatine | Mark Lofgren | Republican | 2016 | Local Government (Vice Chair) | Economic Development (Chair) |
| 49 | Scott | Cindy Winckler | Democratic | 2022 | Ethics (Ranking Member) | Education (Ranking Member) |
| 50 | Des Moines and Lee | Jeff Reichman | Republican | 2020 | Veterans Affairs (Chair) | |