The seat is vacant after incumbent Kyrsten Sinema left the Democratic Party to become an independent in December 2023.
Donald Trump and Kamala Harris are in a close race for the White House in battleground Arizona, the latest polls show.
Election officials in Arizona are racing to correct a clerical error that could shut out nearly 100,000 voters from casting ballots in state and local races.
A Maricopa County judge has rejected an effort to prevent votes from being counted on a citizen initiative that would change Arizona primary elections, a ruling that brings a measure of clarity as the first ballots are being sent to voters.
National Voter Registration Day is on Thursday, Sept. 17. Here's everything you need to know about registering to vote in Arizona before the election.
An error that was discovered in the way Arizona verifies citizenship could prevent nearly 100,000 residents from voting in state and local elections this fall.
Officials have pitched the matter to the Arizona Supreme Court and begun to contemplate what next steps might look like for impacted Arizonans.
The pro-Trump group America PAC, which was founded by the billionaire Elon Musk, has cut ties with a canvassing firm in two battleground states, just seven weeks before Election Day.
The voters, most of whom are Republicans, attested that they were U.S. citizens. A coding glitch means officials can't confirm if they proved it.