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Iowa Senate

Coordinates:41°35′28″N93°36′14″W / 41.591°N 93.604°W /41.591; -93.604
From Wikipedia, the free encyclopedia
Upper house of the Iowa General Assembly

41°35′28″N93°36′14″W / 41.591°N 93.604°W /41.591; -93.604

Iowa Senate
Iowa General Assembly
Coat of arms or logo
Type
Type
Term limits
None
History
New session started
January 13, 2023
Leadership
President
Amy Sinclair (R)
since January 4, 2023
President pro tempore
Ken Rozenboom (R)
since January 8, 2025
Majority Leader
Mike Klimesh (R)[1]
since September 24, 2025[1]
Minority Leader
Janice Weiner (D)
since January 8, 2025
Structure
Seats50

Seat display

Map display
Political groups
Majority

Minority

Length of term
4 years
AuthorityLegislative Department, Section 3,Iowa Constitution
Salary$25,000/year + per diem
Elections
Last election
November 5, 2024
(25 seats)
Next election
November 3, 2026
(25 seats)
RedistrictingLegislative Service Agency with legislative approval
Meeting place
State Senate Chamber
Iowa State Capitol
Des Moines,Iowa
Website
Iowa General Assembly
Rules
90th General Assembly Senate Rules

TheIowa Senate is theupper house of theIowa General Assembly. There are 50 seats in the Iowa Senate, representing 50 single-member districts across thestate of Iowa with populations of approximately 63,807 per constituency, as of the2020 United States census[update].[2] Each Senate district is composed of two House districts. The Senate meets at theIowa State Capitol inDes Moines.

Unlike thelower house, theIowa House of Representatives, senators serve four-year terms, with noterm limits. Terms are staggered so that half the Senate is up for reelection every two years.

Leadership

[edit]

ThePresident of the Senate presides over the body, whose powers include referring bills to committees, recognizing members during debate, and making procedural rulings. Unlike the more powerful Speaker of theIowa House of Representatives, the Senate President cannot appoint committee chairmanships or shuffle committee memberships.[3] Thelieutenant governor of Iowa was the presiding officer of the Senate until 1988, when an amendment to theConstitution of Iowa was passed in a referendum (effective from 1991).[4] The other partisan Senate leadership positions, such as theMajority andMinority leaders, are elected by their respective party caucuses to head their parties in the chamber.

ThePresident of the Senate isRepublicanAmy Sinclair of the 12th District. TheMajority Leader is RepublicanJack Whitver of the 23rd District. TheMinority Leader isDemocratJanice Weiner of the 36th District.[5]

Committee leadership

[edit]
CommitteeChairVice chairRanking member
AgricultureDan ZumbachAnnette SweeneyKevin Kinney
AppropriationsTim KraayenbrinkMark LofgrenJoe Bolkcom
CommerceJason SchultzCarrie KoelkerJim Lykam
EducationAmy SinclairJeff TaylorHerman Quirmbach
EthicsCarrie KoelkerJim CarlinPam Jochum
Government OversightJason SchultzCraig Williams
Human ResourcesJeff EdlerMark CostelloLiz Mathis
JudiciaryBrad ZaunJulian GarrettKevin Kinney
Labor and Business RelationsZach WhitingJesse GreenNate Boulton
Local GovernmentTom ShipleyMike KlimeshJackie Smith
Natural Resources and EnvironmentAnnette SweeneyDawn DriscollSarah Trone Garriott
Rules and AdministrationJack WhitverJake ChapmanZach Wahls
State GovernmentRoby SmithChris CournoyerTony Bisignano
TransportationWaylon BrownAdrian DickeyEric Giddens
Veterans AffairsJim CarlinJeff ReichmanEric Giddens
Ways and MeansDan DawsonTim GoodwinPam Jochum

*All chairs and vice chairs areRepublicans. All ranking members areDemocrats.[6]

Current composition

[edit]
AffiliationParty
(shading indicates majority caucus)
Total
DemocraticRepublicanIndVacant
End 201226230491
2013–201426240500
Begin 201526240500
End 2016 session[7]231
2017–201820291500
2019–202218320500
2023–202416340500
Begin 2025[8]15340491
January 28, 2025[9]16500
June 25, 2025[10]33491
August 26, 2025[11]17500
October 6, 2025[12]16491
Latest voting share32.7%67.3%

Senators

[edit]
Iowa senators as of October 6, 2025[update]
District
County(ies) represented
Portrait
Senator
Party
First
elected
Standing
committee
leader
Appropriations
subcommittee
member
1WoodburyCatelin DreyDemocratic2025[a]TBATBA
2Plymouth andSiouxJeff TaylorRepublican2020Education (Vice Chair)Education (Chair)
3Osceola,O'Brien,Clay,Cherokee, andBuena VistaLynn EvansRepublican2022Education
4Calhoun,Pocahontas,Sac, andWebsterTim KraayenbrinkRepublican2014Appropriations (Chair), Technology (Vice Chair)
5Clay,Dickinson,Emmet,Kossuth,Palo Alto andWinnebagoDave RowleyRepublican2020Administration and Regulation Appropriations (Chair)
6Audubon,Carroll,Crawford,Ida, andShelbyJason SchultzRepublican2014State Government (Chair)
7Cherokee,Monona,Plymouth, andWoodburyKevin AlonsRepublican2022Health and Human Services
8Fremont,Harrison,Mills, andPottawattamie,Mark CostelloRepublican2014[b]Ethics (Vice Chair)Health and Human Services (Chair)
9Adams,Cass,Montgomery,Page,Ringgold,Taylor, andUnionTom ShipleyRepublican2014Ethics (Chair), Natural Resources and Environment (Vice Chair)Agriculture and Natural Resources
10PottawattamieDan DawsonRepublican2016Ways and Means (Chair)
11Marion andWarrenJulian GarrettRepublican2013[c]Judiciary (Vice Chair)Justice System (Chair)
12Adair,Appanoose,Clarke,Dallas,Decatur,Lucas,Madison,Union andWayneAmy SinclairRepublican2012Government Oversight (Chair), Rules and Administration (Vice Chair)
13Appanoose,Davis,Monroe, andWapelloCherielynn WestrichRepublican2022Justice System (Vice Chair)
14DallasSarah Trone GarriottDemocratic2020Health and Human Services (Ranking Member)Health and Human Services
15PolkTony BisignanoDemocratic2014State Government (Ranking Member), Agriculture (Ranking Member)
16Dallas andPolkVacant[12]
17PolkIzaah KnoxDemocratic2022Natural Resources and Environment (Ranking Member)Education
18PolkOfficial Portrait for the 85th General AssemblyJanet PetersenDemocratic2012Appropriations (Ranking Member)Transportation, Infrastructure, and Capitals (Ranking Member)
19Jasper,Mahaska, andMarionOfficial Portrait for the 85th General AssemblyKen RozenboomRepublican2012Agriculture (Vice Chair), Education (Chair)
20PolkMike PikeRepublican2024
21PolkMike BousselotRepublican2022Commerce (Vice Chair)Transportation, Infrastructure, and Capitals (Vice Chair)
22PolkMatt BlakeDemocratic2024
23Dallas andPolkOfficial Portrait for the 85th General AssemblyJack WhitverRepublican2011[d]Rules and Administration (Chair)
24Boone,Dallas,Greene,Guthrie, andStoryJesse GreenRepublican2020Local Government (Chair)
25StoryOfficial Portrait for the 85th General AssemblyHerman QuirmbachDemocratic2002Education (Ranking Member)Economic Development
26Marshall andStoryKara WarmeRepublican2024
27Black Hawk,Grundy,Hardin,Poweshiek, andTamaAnnette SweeneyRepublican2018Natural Resources and Environment (Chair)Agriculture and Natural Resources (Vice Chair)
28Franklin,Hancock,Hamilton,Humbolt, andWrightOfficial Portrait for the 85th General AssemblyDennis GuthRepublican2012N/AAdministration and Regulation (Vice Chair)
29Bremer,Butler,Chickasaw, andFloydSandy SalmonRepublican2022Veterans Affairs (Vice Chair)Justice System
30Cerro Gordo,Floyd,Mitchell, andWorthDoug CampbellRepublican2024
31Black HawkOfficial Portrait for the 85th General AssemblyWilliam DotzlerDemocratic2002Veterans Affairs (Ranking Member)Economic Development (Ranking Member)
32Allamakee,Clayton,Fayette,Howard, andWinneshiekMike KlimeshRepublican2020Government Oversight (Vice Chair); Transportation (Chair)Health and Human Services
33Dubuque,Jones andJacksonCarrie KoelkerRepublican2018Was and Means (Vice Chair)Transportation, Infrastructure, and Capitals (Chair)
34Black Hawk,Buchanan,Delaware,Dubuque, andFayetteOfficial Portrait for the 85th General AssemblyDan ZumbachRepublican2012Appropriations(Vice Chair)Agriculture and Natural Resources (Chair)
35Clinton,Jackson, andScottMike ZimmerDemocratic2025[e]
36DubuqueThomas TownsendDemocratic2024
37LinnMolly DonahueDemocratic2022Workforce (Ranking Member)Health and Human Services (Ranking Member)
38Benton,Black Hawk, andTamaDave SiresRepublican2024
39LinnLiz BennettDemocratic2022Technology (Ranking Member)Transportation, Infrastructure, and Capitals
40LinnArt StaedDemocratic2024
41Cedar,Muscatine, andScottKerry GruenhagenRepublican2022Economic Development
42Benton andLinnCharlie McClintockRepublican2022Workforce (Vice Chair)Justice System
43JohnsonZach WahlsDemocratic2018Rules and Administration (Ranking Member)
44Henry,Jefferson,Keokuk,Mahaska, andVan BurenAdrian DickeyRepublican2021[f]Workforce (Chair); Transportation (Vice Chair)Economic Development
45JohnsonJanice WeinerDemocratic2022Local Government (Ranking Member)Agriculture and Natural Resources
46Iowa,Johnson andWashingtonDawn DriscollRepublican2020Agriculture (Chair)
47ScottScott WebsterRepublican2022Administration and Regulation
48Des Moines,Henry,Louisa, andMuscatineMark LofgrenRepublican2016Local Government (Vice Chair)Economic Development (Chair)
49ScottCindy WincklerDemocratic2022Ethics (Ranking Member)Education (Ranking Member)
50Des Moines andLeeJeff ReichmanRepublican2020Veterans Affairs (Chair)

Notes

[edit]
  1. ^First elected in an August 26, 2025 special election
  2. ^First elected in a December 30, 2014 special election.
  3. ^First elected in a November 19, 2013 special election.
  4. ^First elected in a January 18, 2011 special election.
  5. ^First elected in a January 28, 2025 special election.
  6. ^First elected in a January 26, 2021 special election.

Past notable members

[edit]

Federal offices

[edit]

10 members became US Senators including:Samuel J. Kirkwood,George G. Wright,James F. Wilson,Albert B. Cummins (also served asPresident Pro Tempore of the Senate),Lafayette Young,George A. Wilson,Guy Gillette,Jack Miller,Roger Jepsen andJoni Ernst.

5 members became members of the US House of Representatives including: James F. Wilson,Madison Miner Walden,Steve King,Randy Feenstra andMariannette Miller-Meeks.

3 members became Federal Cabinet Members including: Samuel J. Kirkwood asSecretary of Interior,George W. McCrary,Secretary of War andTom Vilsack asSecretary of Agriculture.

State offices

[edit]

13 members became Governor including: Samuel J. Kirkwood,William Larrabee,Beryl F. Carroll, Albert B. Cummins,Warren Garst,John Hammill (served as Acting Governor in 1922, then Governor in 1925),Daniel Webster Turner, George A. Wilson,William S. Beardsley,Leo Elthon,Robert D. Fulton, Tom Vilsack andKim Reynolds.

28 members became Lieutenant Governor including:Nicholas J. Rusch,John R. Needham,Enoch W. Eastman,Benjamin F. Gue,John Scott, Madison Miner Walden,Henry C. Bulis,Joseph Dysart,Frank T. Campbell,Alfred N. Poyneer,Samuel L. Bestow,Warren S. Dungan,Mathies Parrott, Warren Garst, John Hammill,Clem F. Kimball,Arch W. McFarlane,John K. Valentine,Kenneth A. Evans, Leo Elthon,Edward J. McManus, Robert D. Fulton, Roger Jepsen,Arthur Neu,Joy Corning,Patty Judge, Kim Reynolds andChris Cournoyer.

1 member was twice theChief Justice of the Iowa Supreme Court and Associate Justice of the Iowa Supreme Court: George G. Wright

2 members held state level elected positions including: Beryl F. Carroll asIowa State Auditor from 1903 to 1909 and Patty Judge asIowa Secretary of Agriculture from 1999 to 2007.

Senate chamber seating chart detail from the 1882 Iowa Redbook

Past composition of the Senate

[edit]
Main article:Political party strength in Iowa

See also

[edit]

References

[edit]
  1. ^abOpsahl, Robin (September 24, 2025)."Sen. Mike Klimesh elected Iowa Senate majority leader". Iowa Capital Dispatch. RetrievedSeptember 24, 2025.
  2. ^Iowa Legislative Services Agency (October 21, 2021)."Second Redistricting Plan"(PDF). p. 27. RetrievedSeptember 6, 2025.
  3. ^"The Three Branches of Government". Iowa General Assembly. Archived fromthe original on 2005-11-10. Retrieved2008-03-10.
  4. ^"The Drafting of Iowa's Constitution". Steven Cross, Iowa General Assembly. Retrieved2008-03-10.
  5. ^"Iowa Legislature - Leadership".
  6. ^Agency, Iowa Legislative Services."Committees".www.legis.iowa.gov. Retrieved2018-05-12.
  7. ^David Johnson (District 1)switched parties from Republican to "No Party" on June 7, 2016.[1]
  8. ^RepublicanChris Cournoyer (District 49) resigned to becomelieutenant governor of Iowa.[2]
  9. ^DemocratMike Zimmer elected to succeed Cournoyer.[3]
  10. ^RepublicanRocky De Witt (District 1) died.[4]
  11. ^DemocratCatelin Drey is elected to succeed De Witt.[5]
  12. ^abDemocratClaire Celsi (District 12) died.[6]

External links

[edit]
Wikimedia Commons has media related toIowa Senate.
Wikimedia Commons has media related toIowa State Senators of the 85th General Assembly.
Members of theIowa Senate
90th General Assembly (2025–2027)
President of the Senate
Amy Sinclair (R)
Presidentpro tempore
Ken Rozenboom (R)
Majority Leader
Jack Whitver (R)
Minority Leader
Janice Weiner (D)
  1. ▌Catelin Drey (D)
  2. ▌Jeff Taylor (R)
  3. ▌Lynn Evans (R)
  4. ▌Tim Kraayenbrink (R)
  5. ▌Dave Rowley (R)
  6. ▌Jason Schultz (R)
  7. ▌Kevin Alons (R)
  8. ▌Mark Costello (R)
  9. ▌Tom Shipley (R)
  10. ▌Dan Dawson (R)
  11. ▌Julian Garrett (R)
  12. ▌Amy Sinclair (R)
  13. ▌Cherielynn Westrich (R)
  14. ▌Sarah Trone Garriott (D)
  15. ▌Tony Bisignano (D)
  16. ▌Vacant
  17. ▌Izaah Knox (D)
  18. ▌Janet Petersen (D)
  19. ▌Ken Rozenboom (R)
  20. ▌Mike Pike (R)
  21. ▌Mike Bousselot (R)
  22. ▌Matt Blake (D)
  23. ▌Jack Whitver (R)
  24. ▌Jesse Green (R)
  25. ▌Herman Quirmbach (D)
  26. ▌Kara Warme (R)
  27. ▌Annette Sweeney (R)
  28. ▌Dennis Guth (R)
  29. ▌Sandy Salmon (R)
  30. ▌Doug Campbell (R)
  31. ▌William Dotzler (D)
  32. ▌Mike Klimesh (R)
  33. ▌Carrie Koelker (R)
  34. ▌Dan Zumbach (R)
  35. ▌Mike Zimmer (D)
  36. ▌Thomas Townsend (D)
  37. ▌Molly Donahue (D)
  38. ▌Dave Sires (R)
  39. ▌Liz Bennett (D)
  40. ▌Art Staed (D)
  41. ▌Kerry Gruenhagen (R)
  42. ▌Charlie McClintock (R)
  43. ▌Zach Wahls (D)
  44. ▌Adrian Dickey (R)
  45. ▌Janice Weiner (D)
  46. ▌Dawn Driscoll (R)
  47. ▌Scott Webster (R)
  48. ▌Mark Lofgren (R)
  49. ▌Cindy Winckler (D)
  50. ▌Jeff Reichman (R)
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