But I thought she was supposed to be a vapid beauty queen

One person who doesn't think so: Bill Clinton. [Link]

Mr Clinton, acclaimed even by his enemies as one of the most consummate American politicians in recent history, said he did not agree with Republican vice presidential pick Mrs Palin on politics, but warned fellow Democrats not to underestimate her.

“She’s an instinctively effective candidate and with a compelling story,” Mr Clinton said in an interview with CNBC.

“I think it was exciting to some that she was a woman,” said Mr Clinton.

“I think she, I get why she’s done so well. It’s a mistake to underestimate her. She’s got good intuitive skills. They’re significant.”