Connecticut is one of the bluest of the blue States, but 3,000 people turned out for an anti-civil unions rally in the State Capitol:

HARTFORD, Conn. (AP) About 3,000 protesters gathered at the state Capitol Sunday to denounce lawmakers who voted in favor of legislation last week that made Connecticut the second state to offer civil unions to gay couples.

Brian Brown, executive director of the Family Institute of Connecticut, urged opponents of the bill to vote against lawmakers who supported it in next year's elections.(emphasis added)

It is that last bit that we'll have to wait and see on. Even the most liberal States which have put gay marriage up on a ballot initiative have seen the votes come out overwhelmingly against; it could be that the too-liberal legislature of Connecticut has passed a law which they think is popular, but will end up doing them in. If a strong campaign is waged to defeat the legislators who voted in favor and a large number of them are defeated next year, then it will show that even in the blue areas of the country, gay marriage (and its step-child, civil unions) is political poison. Time will tell.