Kos is spot-on about this. Sure, we all know that if Bush wins a squeaker it probably won’t change the way he governs. It potentially matters in the other direction, though. Goal one of this election is removing GWB and co. from power, but an important secondary goal should be sending a message to Republicans everywhere that the Gingrich/Bush/Delay style and substance leads to big electoral losses. We want the “grownups” to wage a war for the heart and soul and leadership of the GOP, and they need all the help they can get.
This also extends to any local races where the Repub candidate might happen to be a better candidate for the job. Doesn’t matter. The message needs to be that anyone who’ll be part of an organization led by the likes of Bush/Cheney/Delay gets no support until they change that.