One definition of "insanity": Doing the same thing over and over again and expecting a different result.
Tom Toles' view here.
Some on the left seem worried by recent polls showing the McCain/Palin ticket pulling into a national lead. Of course this is largely the expected bounce from the Convention hoopla, especially so this year with the added excitement from McCain's surprise pick. But the Not-Ready-For-Prime-Time Palin is exciting merely because she is new and unknown. She has likely already peaked. As she puts herself out there for scrutiny, over time the shine will rub off, and essentially she has nowhere to go but DOWN.