As usual, religious extremists are apoplectic, claiming that such bills are unpopular with voters and suggesting that such laws could be repealed. It does remain to be seen whether these laws will help or hurt democrats. It could very well give republicans another rallying cry to help turn out votes. Some have suggested that the Republican legislature in New York may have allowed the bill to pass on purpose in order to have an issue to run against, given that they cannot run on their unpopular economic policies of fiscal austerity in a time of severe economic hardship.
We also should not have any illusions about gay marriage spreading to all states. There is no chance that Bible Belt red states in the deep south will allow it. These are states that still make homosexual activity a crime.