Linda McMahon, the former World Wrestling Entertainment (WWE) CEO and Senate candidate from Connecticut, has lost the endorsement of a conservative group over her opposition to the Defense of Marriage Act (DOMA), the 1996 law which outlaws federal agencies from recognizing the legal marriages of gay and lesbian couples.

McMahon is battling her Democratic rival, Rep. Chris Murphy, for the seat being vacated by retiring Senator Joseph Lieberman, a Democrat turned independent.

In their first debate held on Sunday, McMahon said she supports marriage equality, adding that she opposes DOMA.

“I have changed my position on DOMA because with now gay marriage approved in the the state of Connecticut, I don't think it's fair,” she said.

Peter Wolfgang, director of the Family Institute of Connecticut, reversed his group's endorsement on Monday.

“I'm still voting for Linda because her victory could mean the end of Roe v. Wade. But because Linda McMahon flip-flopped and now supports a repeal of DOMA – the one federal law that stops Connecticut's judicially imposed re-definition of marriage from being imposed on the rest of the nation – my September 18th endorsement of her is no longer accurate,” Wolfgang wrote on the group's Facebook page.