Rasmussen:

Sixty-three percent (63%) of voters say John McCain is prepared right now to be president, and 50% say the same thing about Democratic vice presidential candidate Joseph Biden. Forty-four percent (44%) say the man at the top of Biden’s ticket, Barack Obama, is ready, but 45% say he isn’t. Just 26% say McCain is not ready, and 34% feel that way about Biden, according to a new Rasmussen Reports national telephone survey.Over half of voters (52%) say McCain’s running mate, Alaska Governor Sarah Palin, is not prepared to be president, but 33% disagree (crosstabs available for Premium Members).

And among those unaffiliated voters that both campaigns are gunning for?

Among voters not affiliated with either major political party, 71% say McCain is prepared for the Presidency while just 35% say the same about Obama.