Elections / 1990 · Senate · IA
Iowa — 1990 U.S. Senate election
Recent presidential results
Akashic1990 · U.S. SenateIowa · U.S. SenateTom HarkinD+9.1
Candidates
Statewide candidate totals — MIT Election Data + Science Lab, 1990 Senate returns.
- Tom Harkin✓(i)Democrat535,97554.5%
- Thomas J. TaukeRepublican446,86945.4%
- ScatterOther1,0890.1%
presidential baselinePresident 1988D+10.2Senate 1990D+9.1vs. baselineR+1.2
Iowa's 1990 Senate race ran 1.2 points more Republican than its 1988 presidential margin.
Iowa's Senate margins
Every contest in our store, 1978–2022
| Year | Margin (D minus R) |
|---|---|
| 1978 | −3.2% |
| 1980 | −7.9% |
| 1984 | +11.8% |
| 1986 | −32.5% |
| 1990 | +9.1% |
| 1992 | −42.4% |
| 1996 | +5.1% |
| 1998 | −37.9% |
| 2002 | +10.4% |
| 2004 | −42.3% |
| 2008 | +25.4% |
| 2010 | −31.1% |
| 2014 | −8.3% |
| 2016 | −24.5% |
| 2020 | −6.6% |
| 2022 | −12.2% |
Same ballot, 1990IA
Source. MIT Election Data + Science Lab — 1990 US Senate returns, party-classified by literal ballot party · certified statewide totals. Real returns — nothing estimated.