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Saturday, Jan. 24, 2026

Is every county in Arizona more Republican today than it was during the November 2024 election?

Tallulah Anne, Arizona Center for Investigative Reporting
yes

Republican registration increased in every Arizona county between the November 2024 election and October 2025, the most recent month for which data is available. Overall, the number of registered Republicans rose by more than 41,000 during that period, with Santa Cruz County seeing the biggest increase at 4.2%.

Records from the Arizona Secretary of State’s Office indicate that these increases were driven primarily by new registrations, rather than a widespread partisan shift. While President Donald Trump improved his margins in several traditionally Democratic counties in 2024, helping flip the state overall, many counties did not change party control or become significantly more Republican, according to a Newsweek analysis. Arizona experienced uneven gains across the state, with some counties shifting modestly and others remaining solidly Democratic. 

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Fact briefs are bite-sized, well-sourced explanations that offer clear "yes" or "no" answers to questions, confusions, and unsupported claims circulating online. They rely on publicly available data and documents, often from the original source. Fact briefs are written and published by newsrooms in the Gigafact network.

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The Arizona Center for Investigative Reporting is the state’s only independent, nonpartisan and collaborative nonprofit newsroom dedicated to statewide, data-driven investigative reporting. AZCIR's mission is to hold powerful people and institutions accountable by exposing injustice and systemic inequities through investigative journalism.

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