Former Fla. governor would draw 14 percent out of more than a dozen potential candidates.
The Florida senator thinks Bush would be a "formidable candidate," his spokesman said.
The move adds the backing of the populist Minnesota Democrat to Clinton's camp.
The former Fla. governor gains the most if the 2012 GOP nominee passes on running again.
The former Obama adviser said Clinton needs a rationale for her candidacy.
The former Florida governor said he intends to create a new leadership PAC in January.
State party officials are weighing whether to modify or scrap it.
The governor greeted the president during a stop in New Jersey to address troops.
Sen. Mike Lee (R-Utah) has a solid approval rating among Utah Republicans and isn't vulnerable to a primary challenge, according to a new poll conducted for a national group that supports the senator.
Lee has a 76 percent approval...
Dem voters want an active challenge but prefer Clinton as the eventual nominee.