There's no shortage of their kind in the politically bluest parts of California. Liberals so freaked out about the prospect of President Obama losing his re-election bid that they can't sleep at night. Can't talk about anything else. Can't stop parsing the latest polls. David Plouffe, one of President Obama's top campaign strategists, has a word for supporters he feels are needlessly fretful: bed wetters. "Oh, I think I'm worse than that," Kay Edelman said. For the past several weeks, the 60-year-old San Francisco resident has frequently bolted awake in the middle of the night, in "a panic attack," she...