TUCSON, Ariz. — Voters in southern Arizona have nominated Democrat Adelita Grijalva and Republican Daniel Francis Butierez Sr. to advance to a special general election to replace the late U.S. Rep. Raúl Grijalva in Arizona’s 7th Congressional District.

Raúl Grijalva was one of the most senior and progressive power brokers on Capitol Hill.

The seat will not decide control of the U.S. House, but it is one of three vacancies in heavily Democratic districts that, when filled in special elections this fall, will likely chip away at Republicans’ slender 220-212 majority in the chamber.

Democrats have a nearly 2-1 ratio registration advantage over Republicans in the 7th District.

Butierez and Adelita Grijalva will represent their parties in a Sept. 23 special election to serve out the remai

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