-Maine Republican Susan Collins became the fourth sitting GOP senator to publicly come out in favor of same-sex marriage, announcing her support Wednesday.
Collins publicly announced her support for same-sex marriage after the Human Rights Campaign, America's largest LGBT advocacy group, endorsed her re-election over Democrat challenger Shenna Bellows.
"A number of states, including my home state of Maine, have now legalized same-sex marriage, and I agree with that decision," Collins explained to the Bangor Daily News.
"Nearly 44 percent of Americans live in a state where same-sex couples can be legally married, and I believe this number will only continue to grow."
Lance Dutson, a spokesman for Collins, said the senator has chosen to stay out of the debate for marriage equality because she did not want to overstep her legislative limits.