Political party strength in Arizona
As of July 2025, Arizona's registered voters include 1,597,705 Republicans, 1,270,307 Democrats, 31,905 Libertarians, 39,804 No Labels, 5,045 Greens, and 1,525,855 "Other".
State politics
Most political offices are currently held by members of the Republican Party. Both U.S. Senators and 3 of out the 9 House of Representatives members are Democrats, Many were first elected in the 2018 elections. The following table indicates the political parties of elected officials in Arizona:
The table also indicates the historical party composition in the:
For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.
In 2026 Arizonans will elect a lieutenant governor for the first time, pursuant to Proposition 131 in 2022.