The closely matched probabilities around 2.45M-2.75M ballots stem from expectations of modest growth over the 2.29 million votes cast in Arizona’s 2022 gubernatorial contest. Incumbent Democrat Katie Hobbs holds consistent polling leads over Republican Andy Biggs, with advantages among independents and some crossover from 2024 Trump voters, yet Republican base consolidation remains uneven and primary turnout was low. Arizona’s heavy reliance on mail and early voting, combined with ongoing registration growth and voter concerns over the economy and water, creates uncertainty over whether additional mobilization will push totals into the upper or lower portion of that range. National political signals and final early-vote returns in the coming weeks could shift the distribution across adjacent bands.