I might have agreed with you last week, but not anymore. Michael Barone, btw, wrote a great piece, and there was another here this week, that points out that the only polls showing Republicans losing the Congress--either house--are generic polls; on the state-by-state level, in individual races, there's not a lot of evidence of it.
And the Republicans in most danger are apparently the most conservative. I doubt those who want to sit it out in Nov. will do so if they see their conservative reps in trouble.
More to the point, I don't think the WOT will be a drag. in fact, I think election night we will see what I and many others predicted in the past 2 elections: 9/11 is STILL the #1 issue with voters. They just don't want to risk giving the Dems veto power over our WOT.