Senate Elections 2018 | US Senate Elections | Arizona Races
2018 Arizona U.S. Senate Election Results
Kyrsten Sinema
Percent: 49.96%
Votes: 1,191,100
Martha McSally
Percent: 47.61%
Votes: 1,135,200
Race Summary
In the 2018 U.S. Senate election in Arizona, Democrat Kyrsten Sinema narrowly defeated Republican Martha McSally, securing 49.96% of the vote to McSally's 47.61%. Sinema's victory marked a historic milestone as she became the first woman elected to represent Arizona in the Senate.
Full Results
Kyrsten Sinema (DEM)
Percent: 49.96%
Votes: 1,191,100
Martha McSally (REP)
Percent: 47.61%
Votes: 1,135,200
Angela Green (GRN)
Percent: 2.41%
Votes: 57,442
Write-Ins
Percent: 0.02%
Votes: 566
Total votes: 2,384,308
State Map
Results by County
Apache County
Kyrsten Sinema (DEM)
Percent: 64.97%
Votes: 16,298
Martha McSally (REP)
Percent: 31.13%
Votes: 7,810
Angela Green (GRN)
Percent: 3.83%
Votes: 961
Write-Ins
Percent: 0.07%
Votes: 18
Total votes: 25,087
Graham County
Kyrsten Sinema (DEM)
Percent: 31.76%
Votes: 3,368
Martha McSally (REP)
Percent: 64.77%
Votes: 6,870
Angela Green (GRN)
Percent: 3.42%
Votes: 363
Write-Ins
Percent: 0.05%
Votes: 5
Total votes: 10,606
Mohave County
Kyrsten Sinema (DEM)
Percent: 26.88%
Votes: 19,214
Martha McSally (REP)
Percent: 70.25%
Votes: 50,209
Angela Green (GRN)
Percent: 2.84%
Votes: 2,027
Write-Ins
Percent: 0.03%
Votes: 19
Total votes: 71,469
Santa Cruz County
Kyrsten Sinema (DEM)
Percent: 68.51%
Votes: 9,241
Martha McSally (REP)
Percent: 28.38%
Votes: 3,828
Angela Green (GRN)
Percent: 3.10%
Votes: 418
Write-Ins
Percent: 0.01%
Votes: 1
Total votes: 13,488
Cochise County
Kyrsten Sinema (DEM)
Percent: 38.16%
Votes: 17,383
Martha McSally (REP)
Percent: 59.12%
Votes: 26,929
Angela Green (GRN)
Percent: 2.66%
Votes: 1,212
Write-Ins
Percent: 0.05%
Votes: 25
Total votes: 45,549
Greenlee County
Kyrsten Sinema (DEM)
Percent: 40.59%
Votes: 1,042
Martha McSally (REP)
Percent: 55.16%
Votes: 1,416
Angela Green (GRN)
Percent: 4.21%
Votes: 108
Write-Ins
Percent: 0.04%
Votes: 1
Total votes: 2,567
Navajo County
Kyrsten Sinema (DEM)
Percent: 45.37%
Votes: 16,624
Martha McSally (REP)
Percent: 51.22%
Votes: 18,767
Angela Green (GRN)
Percent: 3.38%
Votes: 1,238
Write-Ins
Percent: 0.03%
Votes: 11
Total votes: 36,640
Yavapai County
Kyrsten Sinema (DEM)
Percent: 37.06%
Votes: 40,160
Martha McSally (REP)
Percent: 60.27%
Votes: 65,308
Angela Green (GRN)
Percent: 2.65%
Votes: 2,870
Write-Ins
Percent: 0.03%
Votes: 30
Total votes: 108,368
Coconino County
Kyrsten Sinema (DEM)
Percent: 61.94%
Votes: 34,240
Martha McSally (REP)
Percent: 34.82%
Votes: 19,249
Angela Green (GRN)
Percent: 3.18%
Votes: 1,757
Write-Ins
Percent: 0.06%
Votes: 34
Total votes: 55,280
La Paz County
Kyrsten Sinema (DEM)
Percent: 31.72%
Votes: 1,609
Martha McSally (REP)
Percent: 64.36%
Votes: 3,265
Angela Green (GRN)
Percent: 3.92%
Votes: 199
Write-Ins
Percent: 0.00%
Votes: 0
Total votes: 5,073
Pima County
Kyrsten Sinema (DEM)
Percent: 56.65%
Votes: 221,242
Martha McSally (REP)
Percent: 41.11%
Votes: 160,550
Angela Green (GRN)
Percent: 2.23%
Votes: 8,710
Write-Ins
Percent: 0.02%
Votes: 66
Total votes: 390,568
Yuma County
Kyrsten Sinema (DEM)
Percent: 45.42%
Votes: 19,880
Martha McSally (REP)
Percent: 51.48%
Votes: 22,532
Angela Green (GRN)
Percent: 3.09%
Votes: 1,351
Write-Ins
Percent: 0.01%
Votes: 4
Total votes: 43,767
Gila County
Kyrsten Sinema (DEM)
Percent: 37.28%
Votes: 7,643
Martha McSally (REP)
Percent: 59.42%
Votes: 12,180
Angela Green (GRN)
Percent: 3.29%
Votes: 674
Write-Ins
Percent: 0.01%
Votes: 2
Total votes: 20,499
Maricopa County
Kyrsten Sinema (DEM)
Percent: 50.96%
Votes: 732,761
Martha McSally (REP)
Percent: 46.77%
Votes: 672,505
Angela Green (GRN)
Percent: 2.25%
Votes: 32,371
Write-Ins
Percent: 0.02%
Votes: 315
Total votes: 1,437,952
Pinal County
Kyrsten Sinema (DEM)
Percent: 42.93%
Votes: 50,395
Martha McSally (REP)
Percent: 54.33%
Votes: 63,782
Angela Green (GRN)
Percent: 2.71%
Votes: 3,183
Write-Ins
Percent: 0.03%
Votes: 35
Total votes: 117,395