I got a feeling that Santorum and DeWine will retain their seats in the Senate and the GOP will gain 1 or two seats.
The thing to try to watch is the black Republican candidates in the mid Atlantic states. Blackwell polls 50% in black communties in OH. Will this pull along neighboring state blacks to vote Republican too for the first time in a long time? It may produce a regional shift, but it will be going on under the radar. Maryland has already voted Steele statewide.