Could it still be Hillary?

Barack Obama is expected to announce his vice presidential pick Saturday, and the veepstakes talk has reached fever pitch. The media are focusing mostly on Evan Bayh, Joe Biden, Tim Kaine and Kathleen Sebelius, who is staying mum. But is it possible that Obama still has a surprise in store?
Ralph Nader, for one, thinks Obama is planning to pick Hillary Rodham Clinton — and that it would be “dumb” not to. “The polls show 25 percent of her supporters have not gotten on board,” Nader noted.
If Clinton and Obama can get past their personal animosity and primary wounds, the pairing still might make sense, with Clinton bringing undeniable excitement to the ticket and uniting the party in a way that a Biden or Bayh pick couldn’t. Not to mention that she’s a tough, seasoned campaigner.
I wouldn’t count it out.