Democrat JoAnna Mendoza Defeats Republican Juan Ciscomani in Arizona

Democrat JoAnna Mendoza defeated Republican incumbent Juan Ciscomani in the election for Arizona's 6th Congressional District. Decision Desk HQ projected Mendoza as the winner on Tuesday night, November 3, 2026, with over 57 percent of the vote compared to just under 41 percent for Ciscomani.

Ciscomani, who has represented the border region district since 2023, campaigned on his record as a bipartisan member of Congress. He emphasized his commitment to delivering results for the district over party politics.

Mendoza challenged the incumbent by arguing he was too closely aligned with the Trump administration. She specifically claimed Ciscomani and his allies failed to stand up to the administration regarding healthcare, SNAP, and the war with Iran.