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About

JoAnna Mendoza is the Democratic nominee challenging incumbent Juan Ciscomani in Arizona's 6th Congressional District, having advanced from the July 21, 2026 primary. A retired U.S. Marine with a 20-year military career who served as a drill instructor and deployed to Iraq and Afghanistan, she was raised in a farmworker family in Pinal County and has worked as a nonprofit leader, veteran advocate, and congressional staffer. Her campaign emphasizes lowering costs, protecting Social Security and rural hospitals, and reversing cuts to AHCCCS and SNAP; in late September 2026, the Arizona Republic reported she had purged social media posts from her 2020 state Senate run touching on policing, LGBTQ+ equality, and systemic racism.

Positions on Key Issues

Economy

Mendoza says one job should provide a livable wage, benefits, and the ability to retire with dignity. She supports workforce training, apprenticeships, and technical education; backing small businesses and bringing good-paying jobs to Southern Arizona; requiring companies that establish operations in Arizona to hire and retain local workers; and workers' right to unionize.

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Background

Career History

U.S. Navy service member
U.S. Navy

Enlisted in the U.S. Navy at age 17, serving about three years before joining the Marine Corps.

U.S. Marine (Drill Instructor)
U.S. Marine Corps

20-year military career, serving as a Marine Corps Drill Instructor, instructor at Marine Officer Candidate School, and staff non-commissioned officer, with deployments to Iraq and Afghanistan.

Democratic nominee, Arizona State Senate District 11 2020 – 2020
Arizona State Senate

Ran unsuccessfully for the Arizona State Senate in District 11 in 2020, losing to incumbent Vince Leach.

Nonprofit leader, veteran advocate, and congressional staffer
Community and veterans organizations

Worked as a nonprofit leader, veteran advocate, congressional staffer, and policy expert helping families access benefits and organizing community programs.

Education

Grand Canyon University Master's degree in Leadership

Top Donors

Raised approximately $7.35M through July 1, 2026 (FEC), outraising incumbent Juan Ciscomani. Funding is heavily grassroots: $5.92M from individual contributions (including $2.8M in small-dollar unitemized donations), with only $579K from other committees. Endorsed by EMILY's List, LGBTQ+ Victory Fund, and BOLD PAC. Her financial disclosure shows modest personal wealth (net worth between $99,996 debt and $335,998 assets), and she has drawn a $35,602.50 campaign salary.

Voting Record

Has not held legislative office. A 20-year U.S. Navy and Marine Corps veteran (enlisted at 17) from a farmworker family in Pinal County, she previously ran unsuccessfully for the Arizona State Senate in 2020. Her campaign platform emphasizes working-class economic issues, reproductive rights, and immigration reform, and she has been endorsed by EMILY's List, LGBTQ+ Victory Fund, and BOLD PAC.

About this research

Data compiled from public sources and analyzed using AI. Last updated October 10, 2026. Visit candidate websites for the most current information.

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