A special election was held on September 23, 2025, to fill Arizona's 7th congressional district for the remainder of the 119th United States Congress. The result was certified by the Arizona Secretary of State, Adrian Fontes, on October 14.
This followed the July 15, 2025, primary election which results were certified by Fontes 16 days later on July 31.
The seat became vacant following the death of incumbent Democrat Raúl Grijalva on March 13, 2025. It is considered a safely Democratic district.
The election was won by former Pima County supervisor Adelita Grijalva, Raúl Grijalva's daughter. The younger Grijalva won by 40%, a significant overperformance from Kamala Harris's 22% victory in the district in the 2024 presidential election.
Incumbent Congressman Raúl Grijalva was diagnosed with lung cancer on April 2, 2024, and died in office on March 13, 2025, from complications from cancer treatments at age 77.
Writing for The Arizona Republic in May, Laura Gersony noted that the "leading candidates" were Daniel Hernández Jr., Adelita Grijalva, and Deja Foxx; further noting that Hernández held an initial lead in fundraising stemming from supporters of Israel and that Grijalva would likely benefit from some of the campaign infrastructure built by her father. Grijalva received the endorsement of both of Arizona's U.S. Senators, Mark Kelly and Ruben Gallego, and a number of Democratic political organizations, including EMILY's List and Giffords.
Grijalva won the Democratic primary on July 15, and faced Republican painting contractor Daniel Butierez.