As if more evidence was needed. The latest Wall Street Journal/NBC News poll gives Barack Obama a 10-point edge and fingers Gov. Moosekiller as a possible culprit along with economic concerns:
Fifty-five percent of voters say Gov. Palin isn't qualified to be president if the need arises, up from 50% two weeks ago. And when given a list of possible concerns about Sen. McCain, voters were by far most likely to say they worry about Gov. Palin's qualification to be president.
The concern about Gov. Palin may also be reflected in the enthusiasm gap between the candidates, which appeared to be closing after the conventions but has widened again. Four in 10 McCain voters call him the "lesser of two evils"; 14% of Obama voters feel the same way. Twenty-six percent of McCain voters say they are excited about their vote; twice as many Obama voters feel excited.
UPDATE: The Pew Research Center poll has similar results.