This year’s filing deadline for candidates running for Congress in Arizona was April 1, 2024.

Thirty-eight candidates are running for Arizona’s nine U.S. House districts, including 16 Democrats and 22 Republicans. That’s 4.22 candidates per district. There were 4.33 candidates per district in 2022, 4.22 candidates per district in 2020, and 4.11 in 2018.

Here are some other highlights from this year’s filings:

• The 3rd and 8th Congressional Districts are open this year. Ruben Gallego (D-03) is running for the U.S. Senate, and Debbie Lesko (R-08) is running for ​​the Maricopa County Board of Supervisors.
• Nine candidates—six Democrats and three Republicans—are running for the 1st Congressional District, the most candidates running for a seat in Arizona this year.
• Eight primaries—two Democratic and six Republican—are contested this year. That’s the fewest since 2014, when five primaries were contested.

• Three incumbents—all Republicans—are in contested primaries this year.
• Candidates filed to run in the Republican and Democratic primaries in all nine districts, meaning no seats are guaranteed to either party.

Arizona is holding primary elections on July 30.

In Arizona, the winner of the primary election is the candidate who receives the highest number of votes cast even if they do not win an outright majority.