I predict that the politicians who win the elections tonight will all violate their promises. They will exploit their power to give one group special privileges at the expense of all of our individual rights. It looks quite a bit like 1994 and we all saw how the "Contract With America" turned out to be mostly useless.
Projecting forward, I think Obama's people are going to exploit the image of Republicans as being obstructionists to try to boost his ratings for 2012. And, there's a good chance the GOP will offer up yet another pathetic candidate who will sap the enthusiasm of voters who would have voted against Obama.
Never underestimate the ability of Republicans to screw up any advantages they have at a given point in time.