Arizona's governor's race will be decided by ballots that were already mailed

Fifteen counties, one number each. What the canvasses, the registration reports and the county recorders' own pages say about where the vote actually is — and what nobody is doing about it.

By Dr. AtlasPublished 15 September 2026Arizona

Arizona's last governor's race was decided by 17,117 votes out of 2,558,665 cast — 0.67 of a percentage point. Two years later Donald Trump carried the same state by 187,382 while the Republican Senate candidate on the same ballot lost it by 80,574. The gap between those two Republicans, on the same ballots, on the same day, is 174,478 votes, and it is negative in all fifteen counties and all thirty legislative districts.

That is the whole shape of the 2026 race. It is not a persuasion problem in the usual sense. It is a question of whether the Republicans who already exist, in the places where they already live, return a ballot that has already been mailed to them.

Eighty-seven percent of Arizona has voted before Election Day

In 2024 Maricopa County verified and counted 1,822,403 early ballots out of 2,078,460 cast — 87.68 percent. In 2022 it was 83.94 percent. Statewide the figure runs between 83 and 88 percent depending on the cycle. Whatever a campaign does in the last week of October, most of Arizona has already decided.

And here is the thing the county's own precinct files show. In the counties that publish a method split, the Republican share of the two-party early vote in 2024 was 50.44 percent. The Republican share of the two-party Election Day vote was 61.35 percent. Republicans in Arizona are very good at the 13 percent of the electorate that shows up in person, and roughly even at the 87 percent that does not.

The cheapest votes in Arizona are ballots that have already been cast

Maricopa County rejected 7,220 ballots in the 2024 general election because the signature on the envelope did not match the signature on file. That is 396 rejections per 100,000 early ballots. In the first election run under the county recorder's new verification process — 4 November 2025 — 5,903 ballots were rejected out of 704,548 cast, which works out to roughly 956 per 100,000 early ballots. The rate more than doubled.

Apply that measured rate to a 2022-size Maricopa early electorate and it is 12,535 ballots — about 7,338 more than the 2024 rate would produce, in one county, against a statewide margin that was 17,117. Those are not votes anyone has to win. They are votes that were already cast, by people who already chose, and then set aside over a signature.

Every one of them is fixable. A mismatched signature can be corrected up to the fifth calendar day after a general election that includes a federal office — 8 November 2026. A missing signature has to be added by 7 p.m. on Election Day, and that is the universe nobody staffs.

“Democrats' ballot-curing push helped tip AG race”

The Arizona Republic, 17 December 2022. Kris Mayes won the attorney general's race by 280 votes, confirmed on recount. The curing operation that decided it reached 3,400 voters.

The county machinery is public, and most of it is free

Arizona law obliges every county recorder, on request from a county or state party chairman, to hand over at no cost a daily list of who has requested an early ballot during the 33 days before an election, and a weekly list of who has returned one. In Maricopa and Pima — the two counties over 800,000 people — the returns list is daily, weekdays, from the Monday after early voting opens to the Monday before the election. That file is the entire ballot-chase operation, and it is free to whoever asks for it in writing.

Pima County goes further and publishes, once a day and to anybody, a cumulative early-ballot processing report and a separate curing report giving the number of signatures needing cure, the number cured, the number rejected and the reason for each rejection. No other Arizona county publishes that. A cure program in Pima can be built off a public web page.

What each county actually looks like on the ground

Maricopa plans 254 Vote Centers for 3 November and says every location and its hours publish on 18 September, with live wait times from 7 October. The county will also let a voter bring a mail ballot to a Vote Center, show identification and run it through the tabulator personally — and that ballot is included in election-night results. The historic Republican problem in Maricopa, the “late early” ballot dropped off on Election Day and counted a week later, now has a fix the voter can perform.

Pinal County is different and the difference matters. It runs 93 assigned precinct polling places, not vote centers — the largest county in Arizona where a voter who walks into the wrong building on 3 November cannot vote there. Pinal has also added 34,042 Republicans to its rolls since January 2020, the fastest growth in the state. New registrants at new addresses, in a county where the wrong building means no ballot, is a structural problem, not a messaging one.

Mohave County — the most Republican county in Arizona — has no weekend in-person early voting at all. Its three library sites in Kingman, Bullhead City and Lake Havasu City run 7 to 30 October, Monday to Friday, 10 a.m. to 4 p.m., closed on Monday 12 October. Colorado City opens for two days. Six hours a weekday is the entire in-person capacity for a county of that size.

Santa Cruz County, the most Hispanic county in Arizona, offers twelve hours of rural in-person early voting in total: Tubac on 17 October from 9 to noon, Rio Rico the same day from 2 to 5, Sonoita on 24 October from 9 to noon, Patagonia that afternoon from 2 to 5. Everything else in that county is mail, and eight named drop-box facilities.

Yuma County turned out 44.54 percent of its registered voters in 2022 — the lowest rate of any county in Arizona — and it is the only majority-Hispanic county a Republican carries. Its Spanish-language radio station is KCEC-FM, La Campesina 104.5, licensed to Wellton. No Republican advertiser appears in the 2026 political file of any Spanish-language station in the state.

The dates that decide it

• 5 October — the last day to register to vote in the 3 November election. Arizona carries 687,826 inactive registrants, 193,410 of them Republicans.
• 7 October — ballots mail, in-person early voting opens, and Maricopa begins publishing live Vote Center wait times.
• 27 October — the last safe day to put a ballot in the mail. Arizona requires the ballot to be received by 7 p.m. on Election Day; a postmark does not count.
• 30 October — in-person early voting ends, 5 p.m.
• 3 November — Election Day. Ballots must be in hand by 7 p.m.
• 8 November — the last day to cure a mismatched signature.

What this is built on

Every figure above is a count from a document, or arithmetic on counts that is labelled as arithmetic. The vote totals are the Arizona Secretary of State's official canvasses for 2018, 2020, 2022, 2024 and the 2026 primary. The early and Election Day splits are precinct files from the counties that publish a method split; counties that do not publish one are left out rather than estimated. Registration is the Secretary of State's own reports, county by county and party by party. The county operational detail — vote center counts, early-voting hours, drop boxes, what each recorder publishes — was read off each county's own pages on 15 September 2026 and checked a second time against primary sources. Nothing here is a forecast, and no win probability is modelled anywhere on this site.