Only, not really. Of course, you couldn't tell it by the eagerness of the New Generation of Republicans. They've already begun lining up for the senate seats that will be up for grabs in two years.
Now, I will say that I've been guilty of wondering who will run for President in 2012 (I'm probably going to be rooting for Gary Johnson, if anybody cares), but I find it rather ridiculous to be worrying about the same races we just got done with. v.v