Ralph Nader is polling at 6% nationally in the latest Presidential poll. That's even above the margin of error, which is what is is to even consider voting for Nader in 2008.
Anyone who votes for Nader this year has the blood of 4094 US soldiers, and even more Iraqis, on their hands. There's just too much at stake to throw a vote away on "principle". And that's even discounting the fact that Ralph is about as qualified to be President as I am (because I'm a U.S. born citizen over 35 too).
As ¡Jestaplero! would say "People are idiots (results higher for Nader voters)"