I so worry about the same outcome in 2008 as you are, AB.
The Dems don't have to even hide that they are "going after" those 21 Senators...and they are going to do it any way they can.
Gloves off...but, the GOP doesn't play that way, unless it is against others in the same party.
I have heard even talk show hosts like Laura Ingraham and Bill O'Reilly go after the GOP politicians with so much more venom than the dems...and so the dems have a head start in defeating the GOP...
That is what helped in 2006...and it will be repeated in 2008, because the above named talk show hosts do NOT take criticism...or would ever admit that they were part of the defeat...
The Dems used to whine when they lost elections claiming voter fraud, a biased press that didn't get their message out, voter turnout, etc. Talk show hosts don't win or lose elections. The GOP needs good candidates, a positive agenda, and a return to the principles that made us successful ala 1994 and the Contract with America.