Democrat Adelita Grijalva and Republican Daniel Butierez dominated a field of congressional hopefuls Tuesday night to get one step closer to representing a wide swath of southern Arizona in Congress.

Adelita Grijalva, daughter of the late Congressman Raúl Grijalva, won Tuesday's Democratic primary in the special election to replace her father, and will advance to this fall’s general election.

The next test of who Democratic voters want to see leading the party will take place Tuesday in southwest Arizona, where three leading candidates are offering competing visions in the primary to fill the late Rep.

Adelita Grijalva is the front-runner to replace her father in Congress but faces an unexpectedly competitive primary featuring a young social-media-savvy newcomer.

Arizona Democrats are set to select their nominee for a U.S. House seat in a district that has been a Democratic stronghold. Front-runner Adelita Grijalva faces competition from youthful contender Deja Foxx,