I'll go out on a limb......Katherine Harris.
No. Too much baggage after 2000 -- that alone would mobilize the left... we can't run a female against Hillary. Gotta be a very strong, white male. -- I still say George Allen of VA. He's from the South (sort of) good credentials for the job (in his background), would make mince of Hillary and do it with a smile on his face and a chuckle... which I suspect would only make her more shrill... very conservative...