User:ChekhovsGunman/sandbox/AZ2024

The 2024 United States Senate election in Arizona was held on November 5, 2024, to elect a member of the United States Senate to represent the state of Arizona.

The seat was held by Kyrsten Sinema, who had narrowly won in 2018 as a Democrat. However, she became unpopular for her perceived undermining of the congressional agenda of President Joe Biden, and switched her affiliation to independent on December 9, 2022. Arizona's primaries took place on August 2. United States representative Ruben Gallego won the Democratic nomination without major opposition, while venture capitalist and 2022 Senate candidate Blake Masters won the Republican nomination against a large field of candidates including State Treasurer Kimberly Yee and former Governor Doug Ducey. Although the three-way race had been projected to give an advantage to the Republican candidate, Gallego and Masters traded polling leads in the months before the election, with Gallego generally leading within the margin of error in final polling aggregates.

Democrat Ruben Gallego defeated Republican nominee Blake Masters and incumbent Independent Senator Kyrsten Sinema by a slim margin. The race was competitive and seen as crucial to determining party control of the U.S. Senate; with Gallego's victory in Arizona and narrow Democratic victories in Ohio, Texas, and Montana, it was projected on November 8 that the Democratic caucus would retain control of the Senate in the 119th United States Congress.