Here is an interactive map that shows the distribution of political party affiliations in Arizona’s 15 counties. If you hover over a county, the map will show that county’s name, the percentage it comprises of the statewide electorate, and statistics about its voters and their party affiliations. You can zoom in on the map for greater detail.

Republicans hold some degree of advantage in eight of the 15 counties. Of these, Yavapai and Mohave counties are the most heavily Republican. Apache and Santa Cruz counties are the most heavily Democratic.

About 75 percent of Arizona’s population lives in its two largest counties: Maricopa County makes up about 60 percent of the state’s population, and Pima County makes up about another 15 percent. Maricopa leans Republican by 5.14 percent. Pima leans Democrat by 8.39 percent.

The pie chart below shows the share each county makes up of the statewide electorate. If you hover over a slice, the chart will show you the county’s name, its number of registered voters, and its share as a percentage.