Hope - and money - spring eternal for Jeb Bush, who isn't letting a lack of interested voters dampen his presidential aspirations. Sources close to the former Florida governor say that his sixth-place finish in the Iowa caucus was even worse than they were expecting, but they're vowing to take the buckets of cash their candidate has collected and win big in the Sunshine State. "Bush did another swing through Florida and raised $500,000 at four events," says an insider close to the GOP long shot. We're told that cash was collected over the course of six hours the week...