2018 Arizona U.S. Senate Election

Arizona · 3 candidates · See every 2018 U.S. Senate race

Who won the 2018 Arizona U.S. Senate Election?

Kyrsten Sinema won the 2018 Arizona U.S. Senate Election. Kyrsten Sinema received 1,191,100 popular votes (49.96%). The main challenger was Martha McSally (47.61%).

See the full head-to-head between Sinema and McSally

Sinema +2.4 pts · won by 55,900 votes

Kyrsten Sinema DemocraticWINNER49.96%

1,191,100 votes

Martha McSally Republican47.61%

1,135,200 votes

Angela GreenGreen2.41%

57,442 votes

Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.