Elections / 2018 · Senate · AZ
Arizona — 2018 U.S. Senate election
Recent presidential results
Akashicstate2018 Senate electionArizona · U.S. SenateSinemaD+2.3
How it voted
Share of the 2018 vote
| Kyrsten Sinema ✓Democrat | 50.0% | 1,191,100 |
|---|---|---|
| Martha McSallyRepublican | 47.6% | 1,135,200 |
| Angela GreenGreen | 2.4% | 57,442 |
2018Senate margin
D+60R+60
15 counties, each filled by 2018 D-vs-R margin. Hover any county for its result.
County-level results (15 counties) — table
| County | Winner | Margin |
|---|---|---|
| APACHE, AZ | Democratic | D+33.9 |
| COCHISE, AZ | Republican | R+21.0 |
| COCONINO, AZ | Democratic | D+26.8 |
| GILA, AZ | Republican | R+22.1 |
| GRAHAM, AZ | Republican | R+33.0 |
| GREENLEE, AZ | Republican | R+14.6 |
| LA PAZ, AZ | Republican | R+32.6 |
| MARICOPA, AZ | Democratic | D+4.2 |
| MOHAVE, AZ | Republican | R+43.4 |
| NAVAJO, AZ | Republican | R+5.9 |
| PIMA, AZ | Democratic | D+15.5 |
| PINAL, AZ | Republican | R+11.4 |
| SANTA CRUZ, AZ | Democratic | D+40.1 |
| YAVAPAI, AZ | Republican | R+23.2 |
| YUMA, AZ | Republican | R+6.1 |
presidential baselinePresident 2016R+3.5Senate 2018D+2.3vs. baselineD+5.8
Arizona's 2018 Senate race ran 5.8 points more Democratic than its 2016 presidential margin.
Arizona's Senate margins
Every contest in our store, 1976–2024
| Year | Margin (D minus R) |
|---|---|
| 1976 | +10.7% |
| 1980 | −1.1% |
| 1982 | +16.6% |
| 1986 | −21.0% |
| 1988 | +15.7% |
| 1992 | −24.2% |
| 1994 | −14.2% |
| 1998 | −41.6% |
| 2000 | −79.3% |
| 2004 | −56.1% |
| 2006 | −9.8% |
| 2010 | −24.3% |
| 2012 | −3.0% |
| 2016 | −13.0% |
| 2018 | +2.3% |
| 2020 | +2.3% |
| 2022 | +4.9% |
| 2024 | +2.4% |
Same ballot, 2018AZ
Source. MIT Election Data + Science Lab — 2018 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.