On July 22, the Arizona Secretary of State released the July 1, 2017 registration tally. The percentages: Republican 34.63%; Democratic 30.27%; Libertarian .88%; Green .19%; independent and miscellaneous 34.04%.

The November 2016 percentages had been: Republican 34.54%; Democratic 30.41%; Libertarian .87%; Green .19%; independent and miscellaneous 33.98%.