Paul Singer, a major donor to Republican candidates, has given $250,000 to the campaign seeking to uphold Maryland's gay marriage law.

Singer is the founder of New York-based hedge-firm Elliot Management and a major donor – reported to be in the millions – to the campaign to elect Mitt Romney.

The donation matches last week's announcement that New York Mayor Michael Bloomberg, also a key GOP contributor, donated $250,000 to Marylanders for Marriage Equality, the coalition of groups working to approve Question 6 on November 6.

β€œHis investment in equality and dignity of Marylanders reflects the growing bipartisan support to get Question 6 over the finish in these critical final weeks,” Chad Griffin, president of the Human Rights Campaign (HRC), the nation's largest gay rights advocate, said of Singer's gift.

Singer, who is straight but has a gay son who married his husband in Massachusetts, the first state to legalize such unions, has given nearly $10 million of his own money toward efforts to legalize gay nuptials in New York, New Hampshire and New Jersey. He also provided $1 million towards the America Unity PAC, a political committee for Republican candidates who support marriage equality.

Marylanders for Marriage Equality last week reported having raised $3.3 million for Question 6, while the Maryland Marriage Alliance, the group working to defeat the measure, reported raising a more modest $838,621.