Even so, it could have longer term effects. There are many GOPs in the 10th district who are getting aggravated by Wolf. First it was his support for 10th district chairman Jim Rich over challenger Heidi Stirrup in the district chairman's race. Then he voted against the earmarking bill. He has also supported the "Hallowed Ground" intiative that is opposed by alot of people over property rights issues. There are rumors that he will draw a primary challenger next time around if things don't change. This Post endorsement could also be used against him if someone decides to challenge him (remember Sean Connaughton's Post endorsement?).
This all fuels questions as to whether he will run at all in 2008. It looks as though he has a tough race this year, and with the prospects of a primary challenger and a strong general election challenger in '08; he may decide its time to quit. After all, the prospects of a dem controlled House look more likely as each day passes. Who wants to sit around as a 26 year incumbent in the minority party?
My guess is he will retire in 2008 if the GOP loses the House. If we manage to hold it, Wolf may be able to secure a chairmanship (possibily Appropriations?) with his senior status and then he would probably wait around for another term or so.
One other thing to keep in mind is that it would behove the GOP to try and replace Wolf in a presidential year. The 10th district, while it has seen changes at the state level, is still a relatively solid district in presidential years (at least through 2008). This was strengthed even more with Warner dropping out of the race for president. Now it still seems unlikely Virginia will go blue in 2008.