State Rep. Richard Fale on Monday formally announced his Republican campaign for a Windward and North Shore state Senate seat.
Fale, a conservative who opposes gay marriage, hopes to take on state Sen. Clayton Hee, who helped pass a gay marriage bill in special session last year.
Fale, a Mormon, could draw significant support from the Mormon-dominated Laie portion of the district.
But Fale has to get through the GOP primary first.
Former state Rep. Colleen Meyer, a conservative, plans to run in the primary.
Meyer lost a close race to Hee in 2012.