Democrat Adelita Grijalva wins special election for her late father's House seat in Arizona

Democrat Adelita Grijalva won Tuesday's special election for the Arizona congressional seat held by her late father, NBC News projects

Democrat Adelita Grijalva won Tuesday's special election for the Arizona congressional seat held by her late father, NBC News projects.

Grijalva, a former Pima County supervisor and Tucson school board member, captured Arizona’s 7th Congressional District, which includes Tucson, over Republican Daniel Butierez. She will serve out the remaining 15 months of Rep. Raúl Grijalva's term after he died in March of complications during cancer treatment.

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Grijalva will fill one of three vacancies in the House, narrowing Republicans' majority to 219-214 as Congress faces some key upcoming moments, including a partisan staring contest over government spending and an effort by House Democrats to force a vote on the disclosure of more files related to the late financier and convicted sex offender Jeffrey Epstein.

Grijalva will join the Congressional Progressive Caucus, she and caucus co-chair Maxwell Frost, D-Fla., said Friday an endorsement video. Grijalva’s father, who served 11 terms in Congress, was a co-chair of the caucus from 2009 to 2019 and chaired the House Natural Resources Committee for four years.