And then they elect anti-marriage Democrats!
This discrepancy is perhaps explained by the failure of some republicans, like McCain and other RINOS, to sieze the issue. They voted down the federal marriage amendment, saying it wasn't necessary ... yet we all saw what the NJ court did two weeks ago, and MA may never allow the people to vote on this issue. But my guess is that the real reason pro-marriage amendments pass even when Dems win is that a substantial number of Democrats know in their hearts that marriage is a God-given institution that remains between a man and a woman. Someone should do an analysis, I suppose ...