A Charisma Query

Here's a quick question before the last night of that Republican thingie gets started. I mentioned this in a comment thread, but I figured I'd ask it up here, too. Given the lackluster performance we've seen from John McCain lately (let's face it--whether you ever liked him or not, this isn't the John McCain of the 2000 primaries anymore), will he be able to live up to Sarah Palin's smooth job of teleprompter reading last night? Has his campaign just set the candidate up for disappointment?