Pima County Democrats outdo Republicans in voter registration ahead of Nov. 3 election

Between June and October, Democratic registration in Pima County climbed by 4,288 voters, while Republicans on the voter rolls increased by 105.

Before the July primary, 234,172 Democrats were registered to vote in Pima County but ahead of the close of voter registration for the Nov. 3 general election, 238,460 were on the voter rolls, according to the latest figures on the Arizona Secretary of State Office’s website.

Meanwhile, the number of Republican voters increased from 180,455 to 180,560 and the number of voters not identifying with either major party increased from 231,563 to 238,865, or 7,302 more voters.

The total number of registered voters in Pima County increased by 11,695, from 646,190 to 657,885.

Congressional District 6, a swing district where incumbent Republican Juan Ciscomani is facing Democratic challenger Joanna Mendoza, saw a drop in registered Republicans and an increase in Democrats and voters not associated with either major party, although Republicans still make up the largest bloc of voters.

The number of GOP voters across CD6, which includes precincts in Pima, Cochise, Pinal, Graham and Greenlee counties, decreased by 175, from 190,711 to 190,536.

By contrast, the number of Democratic voters increased by 2,131, from 159,568 to 161,699, and the number of voters not associated with either party increased by 4,820 voters, from 187,815 to 192,884.

The GOP-leaning Legislative District 17, where Democrats were able to win a House seat in 2024 and hope to flip another House seat and a Senate seat this year, has seen a minor shift away from the Republican Party.

The number of Republicans in LD17, which includes precincts in Pima and Pinal counties, increased by 107 voters, from 69,612 to 69,719. The number of Democratic voters increased by 911, from 51,951 to 52,862, and the number of independent voters increased by 1,736, from 64,203 to 65,969.

Across the state, Republicans accounted for roughly 35 percent of voters, while Democrats accounted for 28 percent and voters not associated with either major party accounted for 36 percent, essentially unchanged since June.

This story includes Greens, Libertarians and No Label party voters in the tally of voters not registered with either of the two major parties.