Andy Biggs holds a commanding lead in Arizona’s Republican gubernatorial primary, driven by President Trump’s endorsement and the February withdrawal of Karrin Taylor Robson that consolidated support among conservative voters. Recent polling shows Biggs ahead by more than 40 points among likely Republican primary participants, reinforced by superior fundraising and an early filing of nomination signatures. Schweikert’s campaign has focused on questions about Biggs’ general-election strength against incumbent Governor Katie Hobbs, yet remains far behind in surveys. The July 21 primary date leaves limited time for major shifts, though an unforeseen scandal or rapid consolidation of the sizable undecided bloc could still alter the outcome before early voting begins.