211 Democrats make the case bans on same-sex nuptials are unconstitutional
W.Va. senator lone Senate Democrat to oppose gay nuptials
In first, a State of the Union includes 'lesbian,' 'bisexual' and 'transgender'
Republicans say House vote on measure unlikely
Supporters looking for 60 votes as vote expected this summer
Marriage support raises question of what’s next for movement
But new W.V. senator an unknown to advocates
