Good lord, this sounds more like a tired stand-up comedy routine than a political campaign. It would be funny if the race weren't tied.
Just in case you've missed, Palin's "Bridge to Nowhere" claim has been endlessly debunked. This won't stop them from endlessly lying about it, but you should expect that sort of treatment by now. John McCain and the GOP clearly don't respect your intelligence. Why else would they shamelessly lie to your face, again and again? It's like swatting bugs.