In his victory speech, ongoing as I write, Sen.-elect Marco Rubio said it would be a "grave mistake" for Republicans to conclude that voters have embraced them. Rather, Rubio said, it's a "second chance--a second chance for Republicans to be what they said they were going to be."
This is exactly the appropriate sort of caution that the GOP should exercise come tomorrow morning. Don't overinterpret tonight's results, a la Democrats in 2008. Assume that things can change in the next two years as rapidly as they have in the last two.
I'm fairly certain that many, many freshman House Republicans are going to be rudely awakened by constituencies that aren't anywhere near as serious about cutting spending as it feels like they are right now.
Let the champagne flow tonight.
But tomorrow, let the sobriety begin.