Singer has given $1 million this year to Freedom to Marry, a national bipartisan advocacy group focused on winning state ballot measures on gay marriage in Maine, Minnesota and Washington. The group plans to spend at least $3 million on its efforts.

Singer, founder of the $20 billion Elliott Management fund, also gave $1 million in start-up money to American Unity PAC, a new super PAC focused on supporting Republican congressional candidates who favor marriage equality.