Hawaii state Rep. Mark Takai (D) has won the Democratic nomination for Rep. Colleen Hanabusa's (D-Hawaii) open House seat. 

The Associated Press has called the race for Takai, who was leading Hawaii state Senate President Donna Mercado Kim (D) by 45 to 27 percent. 

Takai was outspent in the race by Kim, who had the backing of EMILY's List. But she faced questions about her past opposition to gay marriage, and the liberal group VoteVets.org helped Takai, an Army veteran, in the race.

Kim raised $800,000 for the race, spending about half of that as of late July; Takai raised $700,000 and spent $535,000. EMILY's List spent about $50,000 on the race and VoteVets.org spent almost $200,000 for Takai.

He'll face former Rep. Charles Djou (R-Hawaii) in the heavily Democratic district this fall. Djou lost to Hanabusa by 6 points in 2010 and by 10 points in a 2012 comeback bid.

This post was updated at 1:50 a.m.