The Republican nominee was former president Donald Trump.[2] Formerly a moderately red state, Trump won Arizona in 2016 by 3.5%, a reduced margin of Republican victory compared to previous cycles, despite a more favourable presidential election year for the GOP nationwide. Biden narrowly won in Arizona in 2020 by 0.3%. Due to the diversification of Maricopa County, a traditionally Republican stronghold that holds 61.6% of the state's population, the state was now considered a purple state.[3][4]Robert F. Kennedy Jr. had gathered enough signatures to appear on the ballot, but his petition was eventually withdrawn.[5][6]
Donald Trump won Arizona by 5.5%, surpassing the margins predicted by most polls.[7] This was the largest margin of victory since 2012 for a Republican presidential candidate, as well as the first time since 2012 that a presidential candidate won the state with an absolute majority of the vote. It was Trump's largest margin of victory in the seven swing states he won, and Trump's strongest performance in a state won by Biden in 2020.
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