Democratic state Sen. Dave Min won an open congressional seat in coastal Orange County, defeating Republican business owner Scott Baugh despite recent gains in GOP voter registration.

California’s 47th Congressional District is one of the most competitive races in the country and was seen by both parties as crucial in their attempts to control the House. Min’s victory means Democrats will retain a seat they currently hold, but it may not be enough for them to win the majority. As of Tuesday night, Republicans were two seats away from winning the House.

Baugh conceded the race Tuesday with a statement to supporters.