Exactly 1 state is holding elections today: Arizona, which is conducting primary day voting for its House delegation and governor's race. The state's 1st and 6th Districts headline a slate of competitive contests, with fundraising totals and early candidate controversies shaping expectations heading into tonight's returns.

Arizona: A Primary Night Stress-Tested by Money and Scandal

Arizona voters are casting primary ballots today across multiple U.S. House races and the governor's race. The most-watched contest sits in the 1st District, rated a toss-up by both Cook Political Report, Sabato's Crystal Ball, and Inside Elections. Fundraising there is lopsided on the Republican side: Eli Crane has raised $9.48 million with $2.84 million on hand, far outpacing Juan Ciscomani's $6.17 million raised, though Ciscomani holds more cash on hand at $4.14 million. On the Democratic side, Joanna Mendoza leads the money race with $7.35 million raised and $3.26 million banked, ahead of Jonathan Treble, Jonathan Nez, Adelita Grijalva, and Marlene Galan-Woods, all of whom trail significantly in receipts.

The 6th District is also drawing national attention, rated a toss-up by Cook and Sabato's Crystal Ball, with Inside Elections tilting the race toward Republicans. That race has been complicated by reporting on Mark Lamb, a Trump-backed former sheriff, whose campaign has faced scrutiny over allegations of sexual improprieties and abuse of power — a storyline that could affect turnout and margins in tonight's primary count. Separately, in the Phoenix-area House race, community organizer Kai Newkirk has mounted a competitive challenge against incumbent Rep. Greg Stanton in a seat previously considered safely Democratic, adding an unexpected primary dynamic to watch as results come in.

Beyond the House races, Arizona's ballot initiative landscape is also active: a campaign called Protect Education, Accountability Now submitted 421,451 signatures on July 2 for a measure to limit Empowerment Scholarship Account eligibility and spending, the first of six planned initiatives to reach that stage ahead of the November general election. Separately, the U.S. Supreme Court has agreed to review Arizona laws on documentary proof of citizenship for voter registration and removal of noncitizens from voter rolls — a case with implications for future election administration in the state, though it will not affect tonight's primary voting. Watch tonight for how the 1st and 6th District margins shape general-election positioning, whether the Lamb campaign's controversies dent his primary performance, and whether Newkirk's challenge to Stanton draws closer than expected.

Also on the ballot today: no other states are holding elections.

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