United States Senate election in Iowa, 2022 (June 7 Republican primary)

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U.S. Senate, Iowa
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Democratic primary
Republican primary
General election
Election details
Filing deadline: March 18, 2022
Primary: June 7, 2022
General: November 8, 2022
Pre-election incumbent:
Chuck Grassley (Republican)
How to vote
Poll times: 7 a.m. to 9 p.m.
Voting in Iowa
Race ratings
Cook Political Report: Solid Republican
Inside Elections: Likely Republican
Sabato's Crystal Ball: Likely Republican
Ballotpedia analysis
U.S. Senate battlegrounds
U.S. House battlegrounds
Federal and state primary competitiveness
Ballotpedia's Election Analysis Hub, 2022
See also
U.S. Senate, Iowa
U.S. Senate • 1st • 2nd • 3rd • 4th
Iowa elections, 2022
U.S. Congress elections, 2022
U.S. Senate elections, 2022
U.S. House elections, 2022

A Republican Party primary took place on June 7, 2022, in Iowa to determine which Republican candidate would run in the state's general election on November 8, 2022.

Incumbent Chuck Grassley advanced from the Republican primary for U.S. Senate Iowa.

Candidate filing deadline Primary election General election
March 18, 2022
June 7, 2022
November 8, 2022


Heading into the election, the incumbent was Chuck Grassley (Republican), who was first elected in 1980.

A primary election is an election in which registered voters select a candidate that they believe should be a political party's candidate for elected office to run in the general election. They are also used to choose convention delegates and party leaders. Primaries are state-level and local-level elections that take place prior to a general election. In Iowa, state law provides for a closed primary where every voter must be affiliated with a party in order to participate in its primary. However, a voter can change his or her political party affiliation on the day of the primary.[1]

For information about which offices are nominated via primary election, see this article.

This page focuses on Iowa's United States Senate Republican primary. For more in-depth information on the state's Democratic primary and the general election, see the following pages:

HOTP-GOP-Ad-1-Small.png

Candidates and election results

Republican primary election

Republican primary for U.S. Senate Iowa

Incumbent Chuck Grassley defeated Jim Carlin in the Republican primary for U.S. Senate Iowa on June 7, 2022.

Candidate
%
Votes
✔
Image of Chuck Grassley
Chuck Grassley
 
73.3
 
143,634
Image of Jim Carlin
Jim Carlin
 
26.5
 
51,891
 Other/Write-in votes
 
0.2
 
312

Incumbents are bolded and underlined. The results have been certified. Source

Total votes: 195,837
Candidate Connection = candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.

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Withdrawn or disqualified candidates

Campaign finance

This section contains campaign finance figures from the Federal Election Commission covering all candidate fundraising and spending in this election.[2] It does not include information on fundraising before the current campaign cycle or on spending by satellite groups. The numbers in this section are updated as candidates file new campaign finance reports. Candidates for Congress are required to file financial reports on a quarterly basis, as well as two weeks before any primary, runoff, or general election in which they will be on the ballot and upon the termination of any campaign committees.[3] Click here to view the reporting schedule for candidates for U.S. Congress in 2022.

U.S. Congress campaign reporting schedule, 2022
Report Close of books Filing deadline
Year-end 2021 12/31/2021 1/31/2022
April quarterly 3/31/2022 4/15/2022
July quarterly 6/30/2022 7/15/2022
October quarterly 9/30/2022 10/15/2022
Pre-general 10/19/2022 10/27/2022
Post-general 11/28/2022 12/08/2022
Year-end 2022 12/31/2022 1/31/2023


Name Party Receipts* Disbursements** Cash on hand Date
Chuck Grassley Republican Party $11,131,685 $11,696,416 $441,424 As of December 31, 2022
Jim Carlin Republican Party $583,857 $583,842 $16 As of December 31, 2022

Source: Federal Elections Commission, "Campaign finance data," 2022. This product uses the openFEC API but is not endorsed or certified by the Federal Election Commission (FEC).

* According to the FEC, "Receipts are anything of value (money, goods, services or property) received by a political committee."
** According to the FEC, a disbursement "is a purchase, payment, distribution, loan, advance, deposit or gift of money or anything of value to influence a federal election," plus other kinds of payments not made to influence a federal election.


Ballot access requirements

The table below details filing requirements for U.S. Senate candidates in Iowa in the 2022 election cycle. For additional information on candidate ballot access requirements in Iowa, click here.

Filing requirements for U.S. Senate candidates, 2022
State Office Party Signatures required Filing fee Filing deadline Source
Iowa U.S. Senate Ballot-qualified party 3,500, including at least 100 signatures from at least 19 counties N/A 3/18/2022 Source
Iowa U.S. Senate Unaffiliated 3,500, including at least 100 signatures from at least 19 counties N/A 8/19/2022[4] Source

Election analysis

Click the tabs below to view information about demographics, past elections, and partisan control of the state.

  • Presidential elections - Information about presidential elections in the state.
  • Statewide elections - Information about recent U.S. Senate and gubernatorial elections in the state.
  • State partisanship - The partisan makeup of the state's congressional delegation and state government.
  • Demographics - Information about the state's demographics and how they compare to the country as a whole.

Presidential elections

See also: Presidential voting trends in Iowa and The Cook Political Report's Partisan Voter Index

Cook PVI by congressional district

Cook Political Report's Partisan Voter Index for Iowa, 2022
District Incumbent Party PVI
Iowa's 1st Mariannette Miller-Meeks Ends.png Republican R+3
Iowa's 2nd Ashley Hinson Ends.png Republican R+4
Iowa's 3rd Cindy Axne Electiondot.png Democratic R+3
Iowa's 4th Randy Feenstra Ends.png Republican R+16


2020 presidential results by 2022 congressional district lines

2020 presidential results in congressional districts based on 2022 district lines, Iowa[5]
District Joe Biden Democratic Party Donald Trump Republican Party
Iowa's 1st 47.6% 50.5%
Iowa's 2nd 46.9% 51.3%
Iowa's 3rd 48.9% 49.3%
Iowa's 4th 36.2% 62.2%


2012-2020

How a state's counties vote in a presidential election and the size of those counties can provide additional insights into election outcomes at other levels of government including statewide and congressional races. Below, four categories are used to describe each county's voting pattern over the 2012, 2016, and 2020 presidential elections: Solid, Trending, Battleground, and New. Click [show] on the table below for examples:


Following the 2020 presidential election, 40.1% of Iowans lived in one of the state's six Solid Democratic counties, which voted for the Democratic presidential candidate in every election from 2012 to 2020, and 31.6% lived in one of 61 Solid Republican counties. Overall, Iowa was Trending Republican, having voted for Barack Obama (D) in 2012, Donald Trump (R) in 2016, and Donald Trump (R) in 2020. Use the table below to view the total number of each type of county in Iowa following the 2020 election as well as the overall percentage of the state population located in each county type.

Historical voting trends

Iowa presidential election results (1900-2020)

  • 11 Democratic wins
  • 20 Republican wins
Year 1900 1904 1908 1912 1916 1920 1924 1928 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 2020
Winning Party R R R D R R R R D D R R D R R R D R R R R R D D D D R D D R R

Statewide elections

This section details the results of the five most recent U.S. Senate and gubernatorial elections held in the state.

U.S. Senate elections

See also: List of United States Senators from Iowa

The table below details the vote in the five most recent U.S. Senate races in Iowa.

U.S. Senate election results in Iowa
Race Winner Runner up
2020 51.8%Republican Party 45.2%Democratic Party
2016 60.1%Republican Party 35.7%Democratic Party
2014 52.1%Republican Party 43.8%Republican Party
2010 64.5%Republican Party 33.2%Democratic Party
2008 62.7%Democratic Party 37.3%Republican Party
Average 58.2 39.0

Gubernatorial elections

See also: Governor of Iowa

The table below details the vote in the five most recent gubernatorial elections in Iowa.

Gubernatorial election results in Iowa
Race Winner Runner up
2018 50.3%Republican Party 47.5%Democratic Party
2014 59.0%Republican Party 37.3%Democratic Party
2010 52.8%Republican Party 43.2%Republican Party
2006 54.0%Democratic Party 44.4%Republican Party
2002 52.7%Democratic Party 44.5%Republican Party
Average 53.8 43.4

State partisanship

Congressional delegation

The table below displays the partisan composition of Iowa's congressional delegation as of November 2022.

Congressional Partisan Breakdown from Iowa, November 2022
Party U.S. Senate U.S. House Total
Democratic 0 1 1
Republican 2 3 5
Independent 0 0 0
Vacancies 0 0 0
Total 2 4 6

State executive

The table below displays the officeholders in Iowa's top four state executive offices as of November 2022.

State executive officials in Iowa, November 2022
Office Officeholder
Governor Republican Party Kim Reynolds
Lieutenant Governor Republican Party Adam Gregg
Secretary of State Republican Party Paul Pate
Attorney General Democratic Party Thomas John Miller

State legislature

The tables below highlight the partisan composition of the Iowa General Assembly as of November 2022.

Iowa State Senate

Party As of November 2022
     Democratic Party 18
     Republican Party 32
     Vacancies 0
Total 50

Iowa House of Representatives

Party As of November 2022
     Democratic Party 40
     Republican Party 60
     Vacancies 0
Total 100

Trifecta control

As of November 2022, Iowa was a Republican trifecta, with majorities in both chambers of the state legislature and control of the governorship. The table below displays the historical trifecta status of the state.

Iowa Party Control: 1992-2022
Four years of Democratic trifectas  •  Eight 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
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
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
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

Demographics

The table below details demographic data in Iowa and compares it to the broader United States as of 2019.

Demographic Data for Iowa
Iowa United States
Population 3,046,355 308,745,538
Land area (sq mi) 55,853 3,531,905
Race and ethnicity**
White 90% 72.5%
Black/African American 3.7% 12.7%
Asian 2.4% 5.5%
Native American 0.4% 0.8%
Pacific Islander 0.1% 0.2%
Other (single race) 1.2% 4.9%
Multiple 2.1% 3.3%
Hispanic/Latino 6% 18%
Education
High school graduation rate 92.1% 88%
College graduation rate 28.6% 32.1%
Income
Median household income $60,523 $62,843
Persons below poverty level 11.5% 13.4%
Source: population provided by U.S. Census Bureau, "Decennial Census" (2010). Other figures provided by U.S. Census Bureau, "American Community Survey" (5-year estimates 2014-2019).
**Note: Percentages for race and ethnicity may add up to more than 100 percent because respondents may report more than one race and the Hispanic/Latino ethnicity may be selected in conjunction with any race. Read more about race and ethnicity in the census here.


See also

External links

Footnotes

  1. ↑ Iowa Secretary of State Website, "Voter Registration FAQ," accessed September 17, 2025
  2. ↑ Fundraising by primary candidates can be found on the race's respective primary election page. Fundraising by general election candidates can be found on the race's general election page.
  3. ↑ Federal Election Commission, "2022 Quarterly Reports," accessed March 2, 2022
  4. ↑ Ballot Access News, "Iowa Secretary of State Now Considers the Old August Petition Deadline for Independent Candidates to be in Force," April 21, 2022
  5. ↑ Daily Kos, "Daily Kos Elections' presidential results by congressional district for 2020, 2016, and 2012," accessed September 9, 2022


Iowa's current delegation to the United States Congress
Senators
Joni Ernst (R)
Chuck Grassley (R)
Representatives
District 1
District 2
District 3
Zach Nunn (R)
District 4
Republican Party (6)


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