Democratic Sen. Mark Warner of Virginia on Monday announced his support for same sex marriage in a post on Facebook.

"I support marriage equality because it is the fair and right thing to do," he wrote. "Like many Virginians and Americans, my views on gay marriage have evolved, and this is the inevitable extension of my efforts to promote equality and opportunity for everyone."

Warner touted his long history of supporting LGBT rights, despite refusal to publicly endorse same sex marriage. Earlier this month, he called on the Supreme Court to strike down Section 3 of the Defense of Marriage Act (DOMA). The Supreme Court will hear arguments Wednesday regarding the constitutionality of the law, which defined marriage as a union between one man and one woman.

Warner said he also was the first Virginia governor to ban employment discrimination based upon sexual orientation within state government, opposed a ban on same sex marriage in Virginia, and supported the repeal of "Don't Ask, Don't Tell."

Other prominent politicians -- Sen. Claire McCaskill (D-MO), Sen. Rob Portman (R-OH), and former secretary of state Hillary Clinton -- have also recently announced their support for same sex marriage.