A head to head comparison of the Arizona 2020 General Election gives us an idea of the break down of the voters.
Mark Kelly received 1.7M (51.2 %) votes, beating Martha McSally who gained 1.6M (48.8 %) by 78.8k votes in Arizona.
Mark Kelly won 5 counties out of the 15 counties that make up Arizona. The record shows that Martha McSally won 10 counties.
During the 2020 general elections, over 3M total number of votes were cast. Mark Kelly got 1,716,467 (2M) over Martha McSally 1,637,661 (2M). He won the popular vote by 1,716,467 (2M). His victory in the State of Arizona (with 1,716,467 votes) represents 50.0% of his popular vote victory.
Top 15 Counties in General Elections
All Candidates (Senate General Elections)
These 15 counties play an important role in these Primary elections. If a candidate, can get a sizable majority in the largest counties (Maricopa, Pima and Pinal), it becomes very difficult to win majorities in the smaller counties without voter outreach and increased voter participation in them.
Top 15 Counties Comparison in General Elections
Maricopa, Pima and Pinal, three of the larger counties voted in favor of Mark Kelly, giving him a 157k vote advantage.