I don't expect Romney will "evolve" and support gay marriage before or after the election.
http://www.boston.com/news/daily/11/romneyletterbaywindows.pdf
When he said “full equality for gays and lesbians”, you think he really said “full equality except marriage”. You also think that he did not install homosexual marriage by his actions. OK, I get it. Please, if my posts disturb you, do not read them.
http://www.boston.com/news/politics/politicalintelligence/2006/12/romney_spoke_of.html
This is a better link, there is a link in the article that takes you to Romney’s letter.