State lawmakers in New Hampshire are expected to take up a measure to repeal the state's same-sex marriage law in January, the same month the state holds a presidential primary. Republican candidates like Mitt Romney (shown), Rick Perry and Herman Cain have had to clarify their position on the hot-button social issue. (Associated Press)

State lawmakers in New Hampshire are expected to take up a measure to repeal the state's same-sex marriage law in January, the same month the state holds a presidential primary. Republican candidates like Mitt Romney (shown), Rick Perry and Herman Cain have had to clarify their position on the hot-button social issue. (Associated Press)