More than two dozen Republicans — including a top adviser to Mitt Romney, the 2012 Republican presidential nominee, and a former congresswoman who made banning same-sex marriage her signature issue — have added their names to a legal brief urging the Supreme Court to declare that gay couples have a constitutional right to wed.
The brief comes as the White House is considering whether to weigh in on the same-sex marriage case.
At this point, the Republicans who signed the document are taking a more expansive stance than President Obama, who favors same-sex marriage but has said he would leave it to the states, as opposed to making it a constitutional right.
The list of Republicans on the brief now tallies more 100, organizers say.
It now includes Beth Myers, who ran Romney’s 2008 campaign and was a senior adviser to him in 2012. Also on the list is Marilyn Musgrave, a retired Colorado congresswoman who was once rated the most conservative member of the House by the American Conservative Union.
Musgrave, who lost her bid for a fourth term in 2008, once warned that if gay couples were allowed to wed, ‘‘the next step is polygamy or group marriage.’’