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Iowa U.S. Senate Seat (Class II)

Iowa · Next election 2026 · 3 active candidates · $19.1M raisedFederal
About This Office

One of two U.S. Senate seats representing the state of Iowa. Senators serve six-year terms and represent the entire state population.

Total Seats
100
Term Length
6 years
Salary
$174,000
Current Officeholders
This Seat
Sen. Joni Ernst
Sen. Joni ErnstR
U.S. Senator · Iowa
Tenure
11y
Bills Spon.
99
Votes Missed
2.19%
Cross-party
185
Committees
ChairSmall Business and Entrepreneurship Committee
ChairRural Development, Energy and Credit Subcommittee
ChairEmerging Threats and Capabilities Subcommittee
+9 more
Other Seats
Sen. Chuck Grassley
Sen. Chuck GrassleyR
U.S. Senator · Iowa
The 2026 Race

12 candidates filed, 3 active for the 2026 Senate election in Iowa. Party primary on Jun 2, 2026. General election on Nov 3, 2026.

Primary
Jun 2, 2026
General
Nov 3, 2026
Total Raised
$19.1M
Candidates
3 active / 12 filed
Incumbent
—
Cash on Hand
$9.1M
Election History
YearWinnerResultRunner-UpTotal Votes
2022Chuck Grassley R56.1%Michael Franken D 43.9%1,214,831
2020Joni Ernst R51.8%Theresa Greenfield D 45.2%1,670,617
2016Chuck Grassley R60.2%Patty Judge D 35.7%1,539,351
2014Joni Ernst R52.2%Bruce Braley D 43.8%1,128,589
2010Chuck Grassley R64.4%Roxanne Conlin D 33.3%1,115,191
2008Tom Harkin D62.7%Christopher Reed R 37.3%1,501,671
2004Charles E. Grassley R70.2%Arthur Small D 27.9%1,478,753
2002Tom Harkin D54.2%Greg Ganske R 43.8%1,022,374
1998Charles E. Grassley R68.4%David Osterberg D 30.5%947,632
1996Tom Harkin D51.8%Jim Lightfoot R 46.7%1,223,774
1992Chuck Grassley R69.6%Jean Lloyd-Jones D 27.2%1,292,201
1990Tom Harkin D54.5%Thomas J. Tauke R 45.5%982,844
1986Charles E. Grassley R66.0%John O. Roehrick D 33.6%891,656
1984Tom Harkin D55.5%Roger W. Jepsen R 43.7%1,292,278
1980Charles E. Grassley R53.5%John Culver D 45.5%1,276,986
State
Population
3,210,507
Median HH Income
$75K
Unemployment
3.6%
Bachelor's+
31.4%
Veterans
6.5%
Median Age
38.6
Mean HH Income
$98K
Poverty Rate
11.1%
HS or Higher
93.3%
Median Home Value
$208K
Median Rent
$972/mo
Owner-Occupied
71.7%
Under 18 / 65+
22.9% / 18.1%