Iowa House of Representatives elections
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This page displays election information for the Iowa House of Representatives.
Elections
Iowa state representatives serve two-year terms, with all seats up for election every two years. Iowa holds elections for its legislature in even years.
2026
Elections for the Iowa House of Representatives will take place in 2026. The general election is on November 3, 2026.
2024
Elections for the Iowa House of Representatives took place in 2024. The general election was on November 5, 2024. The primary was June 4, 2024. The filing deadline was March 15, 2024.
In the 2024 general election the Republican Party expanded its majority by three seats, from 64-36 to 67-33.
| Iowa House of Representatives | |||
|---|---|---|---|
| Party | As of November 5, 2024 | After November 6, 2024 | |
| Democratic Party | 36 | 33 | |
| Republican Party | 64 | 66 | |
| Vacancy | 0 | 1 | |
| Total | 100 | 100 | |
2022
Elections for the Iowa House of Representatives took place in 2022. The general election was on November 8, 2022. A primary was scheduled for June 7, 2022. The filing deadline was March 18, 2022.
In the 2022 general election, the Republican Party expanded its majority by four seats, from 60-40 to 64-36.
| Iowa House of Representatives | |||
|---|---|---|---|
| Party | As of November 8, 2022 | After November 9, 2022 | |
| Democratic Party | 40 | 36 | |
| Republican Party | 60 | 64 | |
| Total | 100 | 100 | |
2020
Elections for the office of Iowa House of Representatives took place in 2020. All 100 seats were up for election. Forty-seven were held by Democrats and 53 were held by Republicans.
The general election was held on November 3, 2020. A primary was scheduled for June 2, 2020. The filing deadline was March 13, 2020.
In the 2020 elections, Republicans increased their majority in the Iowa House from 53-47 to 59-41.
| Iowa House of Representatives | |||
|---|---|---|---|
| Party | As of November 3, 2020 | After November 4, 2020 | |
| Democratic Party | 47 | 41 | |
| Republican Party | 53 | 59 | |
| Total | 100 | 100 | |
2018
Elections for the Iowa House of Representatives took place in 2018. A closed primary election took place on June 5, 2018. The general election was held on November 6, 2018. The candidate filing deadline was March 16, 2018.
In the 2018 elections, the Republican majority in the Iowa House of Representatives was reduced from 58-41 to 54-46.
| Iowa House of Representatives | |||
|---|---|---|---|
| Party | As of November 6, 2018 | After November 7, 2018 | |
| Democratic Party | 41 | 46 | |
| Republican Party | 58 | 54 | |
| Vacancy | 1 | 0 | |
| Total | 100 | 100 | |
2016
Elections for the Iowa House of Representatives took place in 2016. The primary election took place on June 7, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was March 18, 2016. All 100 seats in the Iowa House of Representatives were up for election in 2016.
Heading into the election, Republicans held a 57-43 majority. Republicans gained two seats in the election, giving them a 59-41 majority.
| Iowa House of Representatives | |||
|---|---|---|---|
| Party | As of November 7, 2016 | After November 8, 2016 | |
| Democratic Party | 43 | 41 | |
| Republican Party | 57 | 59 | |
| Total | 100 | 100 | |
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2014Elections for the Iowa House of Representatives took place in 2014. A primary election took place on June 3, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was March 14, 2014. All 100 House seats were up for election in 2014. Heading into the election, Republicans held a 53-47 majority. No partisan change occurred in the election.
2012Elections for the office of Iowa House of Representatives took place in 2012. The primary election was held on June 5, 2012, and the general election was held on November 6, 2012. The candidate filing deadline was March 16, 2012. All 100 House seats were up for election in 2012. Heading into the election, Republicans held a 59-40 majority with one vacancy. Republicans lost six seats in the election, giving them a 53-47 majority.
2010Elections for the office of Iowa House of Representatives took place in 2010. The primary election was held on June 8, 2010, and the general election was held on November 2, 2010. The candidate filing deadline was March 19, 2010. All 100 House seats were up for election in 2010. Heading into the election, Democrats held a 56-44 majority. Democrats lost 14 seats in the election, giving Republicans a 58-42 majority.
In 2010, $13,358,470 in contributions was raised among all campaigns for the state House. The top donors were:[1]
2008Elections for the office of Iowa House of Representatives consisted of a primary election on June 3, 2008, and a general election on November 4, 2008. All 100 House seats were up for election in 2008. During the 2008 election, the total value of contributions to House candidates was $15,474,490. The top 10 contributors were:[2]
2006Elections for the office of Iowa House of Representatives consisted of a primary election on June 6, 2006, and a general election on November 7, 2006. All 100 House seats were up for election in 2006. During the 2006 election, the total value of contributions to House candidates was $10,927,450. The top 10 contributors were:[3]
2004Elections for the office of Iowa House of Representatives consisted of a primary election on June 8, 2004, and a general election on November 2, 2004. All 100 House seats were up for election in 2004. During the 2004 election, the total value of contributions to House candidates was $8,118,332. The top 10 contributors were:[4]
2002Elections for the office of Iowa House of Representatives consisted of a primary election on June 4, 2002, and a general election on November 5, 2002. All 100 House seats were up for election in 2002. During the 2002 election, the total value of contributions to House candidates was $5,507,786. The top 10 contributors were:[5]
2000Elections for the office of Iowa House of Representatives consisted of a primary election on June 6, 2000, and a general election on November 7, 2000. All 100 House seats were up for election in 2000. During the 2000 election, the total value of contributions to House candidates was $5,677,845. The top 10 contributors were:[6]
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Historical party control
Republicans won control of the Iowa House of Representatives in 2010. In 2024, they won a 64-36 majority.
The table below shows the partisan history of the Iowa House following every general election from 1992 to 2024. All data from 2006 or earlier comes from Michael Dubin's Party Affiliations in the State Legislatures (McFarland Press, 2007). Data after 2006 was compiled by Ballotpedia staff.
Iowa House of Representatives election results: 1992-2024
| Year | '92 | '94 | '96 | '98 | '00 | '02 | '04 | '06 | '08 | '10 | '12 | '14 | '16 | '18 | '20 | '22 | '24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Democrats | 49 | 36 | 46 | 44 | 44 | 46 | 49 | 54 | 56 | 42 | 47 | 43 | 41 | 46 | 41 | 36 | 33 |
| Republicans | 51 | 64 | 54 | 56 | 56 | 54 | 51 | 46 | 44 | 58 | 53 | 57 | 59 | 54 | 59 | 64 | 67 |
Before 1992
The Iowa House of Representatives switched partisan control 10 times from 1900 to 2022.
Trifecta history
A state government trifecta is a term that describes single party government, when one political party holds the governor's office and has majorities in both chambers of the legislature in a state government. Between 1992 and 2023, Iowa was under the following types of trifecta control:
- Democratic trifecta: 2007-2010
- Republican trifecta: 1997-1998, 2017-2023
- Divided government: 1992-1996, 1999-2006, 2011-2016
Iowa Party Control: 1992-2025
Four years of Democratic trifectas • Eleven years of Republican trifectas
Scroll left and right on the table below to view more years.
| Year | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Governor | R | R | R | R | R | R | R | D | D | D | D | D | D | D | D | D | D | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
| Senate | D | D | D | D | D | R | R | R | R | R | R | R | R | S | S | D | D | D | D | D | D | D | D | D | D | R | R | R | R | R | R | R | R | R |
| House | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | D | D | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
Footnotes
- ↑ Follow the Money: "Iowa House 2010 Campaign Contributions"
- ↑ Follow the Money, "Iowa 2008 Candidates," accessed August 23, 2013
- ↑ Follow the Money, "Iowa 2006 Candidates," accessed August 23, 2013
- ↑ Follow the Money, "Iowa 2004 Candidates," accessed August 23, 2013
- ↑ Follow the Money, "Iowa 2002 Candidates," accessed August 23, 2013
- ↑ Follow the Money, "Iowa 2000 Candidates," accessed August 23, 2013
