2020 Senate elections · Iowa history
Iowa U.S. Senate election 2020
Joni K. Ernst REP +6.5 · Class II seat · held 11/3/20
- Votes counted
- 1,700,130
- Margin
- 6.5 pts
- Seat held by
- Republicanheld
- President in IA
- R+8.2same year
General election 11/3/20
| Candidate | Party | Votes | Share | Bar |
|---|---|---|---|---|
| Joni K. Ernst Won | REP | 864,997 | 51.74% | |
| Theresa Greenfield | DEM | 754,859 | 45.15% | |
| Rick Stewart | LIB | 36,961 | 2.21% | |
| Undervote | — | 27,438 | 1.64% | |
| Suzanne Herzog | IND | 13,800 | 0.83% | |
| Write-in | — | 1,211 | 0.07% | |
| Overvote | — | 864 | 0.05% | |
| Total | 1,700,130 | |||
Official source: canvsummary.pdf
Other Iowa Senate races
| Year | Seat | Winner | Margin |
|---|---|---|---|
| 2022 | Class III | Chuck Grassley | 12.0 |
| 2020 | Class II | Joni K. Ernst | 6.5 |
| 2016 | Class III | Chuck Grassley | 24.4 |
| 2014 | Class II | Joni K. Ernst | 8.3 |
| 2010 | Class III | Chuck Grassley | 31.1 |
| 2008 | Class II | Tom Harkin | 25.4 |
| 2004 | Class III | Chuck Grassley | 42.3 |
| 2002 | Class II | Tom Harkin | 10.4 |
| 1998 | Class III | Chuck Grassley | 37.9 |
| 1996 | Class II | Tom Harkin | 5.1 |
| 1992 | Class III | Chuck Grassley | 42.4 |
| 1990 | Class II | Tom Harkin | 9.1 |
Questions and answers
Who won the 2020 Iowa Senate race?
Joni K. Ernst (REP) won with 51.7% of the vote, ahead of Theresa Greenfield (45.2%), a margin of 6.5 points.
Did the Iowa Senate seat change party in 2020?
No. The Republican Party held it.
How many votes were cast in the 2020 Iowa Senate race?
1,700,130 votes were counted for the candidates in the general election.
Compiled by FiveThirtyEight from the official source linked above.