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Friday, Nov. 7, 2025

Is the number of registered Republicans in Arizona at an all-time high?

Tallulah Anne, Arizona Center for Investigative Reporting
yes

As of October 2025, Arizona had more than 1.6 million registered Republicans on its voter rolls,  a record high for the state.

Arizona’s electorate has expanded across all political affiliations, not just within the Republican Party, according to the Morrison Institute for Public Policy at Arizona State University.

Over the past several decades, the state has worked to increase access to the ballot through online voter registration, motor-voter laws that allow citizens to register to vote when obtaining or renewing their driver’s licenses, and early voting. Those efforts, along with population and economic growth, have helped boost voter participation and registration overall. Arizona’s population has climbed from almost 750,000 in 1950 to more than 7.6 million in 2025.

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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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