Why would a governor run for the House? Janklow is the only one I can think of who did that and he must've been drunk to do so...
Because sometimes there is nowhere else to go when your term limited. And lets face it, if your coming from a state that only has 3 electorals (North Dakota, Wymoing, Deleware, etc. etc.) your being elected state wide. And when a Senate seat opens, you have a good chance of taking it.
And on for my predictions
DE-AL:
Minner v. Castle
Castle with atleast 58%. Minner is quite unpopular last I heard.
MT-AL:
SChweitxer v. Rehnburg
Toss up, I would say about 52-48 win for either. I would probably throw it to Rehnburg, because Montana might not want to have both seats Democratic, although they had been that way before Burns came in.
ND-AL:
Hoeven v. Pomeroy
Hoeven with about 54%
SD-AL:
ROunds v. Herseth
Herseth with about 55%
VT-AL:
Douglas v. Welch
Toss up, 51%-49% for the winner. Welch didn't come in with a big margin in 06, which means that could be a possible pick up with the right candidate, since we are talking about a very blue state, in a blue year.
WY-AL:
Freudenthal v. Cubin
Freudenthal with about 99% of the vote. Cubin would be smart to step down in '08, regardless of who runs against her.