Elections / 2016 · Senate · IA
The Republican candidate won Iowa's Senate seat R+24.5.
Iowa, 2016. Candidate results and statewide totals below. The presidential race shared this ballot.
Iowa — 2016 Senate result
Source: MIT Election Data + Science Lab, 1976–2024 Senate returns (party-classified by literal ballot party).
Democratic (D)
549,460
35.7%
Republican (R)
926,007
60.2%
All others
63,884
4.2%
Margin
R+24.5
Candidates
Statewide candidate totals — MIT Election Data + Science Lab, 2016 Senate returns.
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Chuck Grassley | RRepublican | 926,007 | 60.2% |
| Patty Judge | DDemocrat | 549,460 | 35.7% |
| Charles Aldrich | OLibertarian | 41,794 | 2.7% |
| Jim Hennager | ONew Independent Party Iowa | 17,649 | 1.1% |
| Michael Luick-Thrams | ONominated By Petition | 4,441 | 0.3% |
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% |