Senator Ayotte is publicly opposed to same-sex marriage, even though such marriages are legal in the state which she represents. In fact, Ayotte resigned as Attorney General when Marriage Equality legislation was enacted in New Hampshire. She has publicly stated that she will oppose any attempt to repeal DOMA.
Senator Shaheen believes that DOMA is unconstitutional and she is co-sponsoring a proposed law (The Respect for Marriage Act) which would overturn DOMA.
Senator McCain is opposed to gay marriage.
Senator Lugar does not support gay marriage.
Senator Blunt is against gay marriage.
Senator Wicker is opposed to gay marriage.
Senator Sessions is opposed to gay marriage.
Senator Begich is a supporter of same-sex marriage.
Senator Robert is opposed to same-sex marriage.
Senator Alexander opposes same-sex marriage.
Senator Barrasso opposes same-sex marriage.
Senator Vitter opposes same-sex marriage.
Senator Enzi is opposed to the legalization of gay marriage.