Published: Apr 20, 2012 10:30 PM EDT

WEST PALM BEACH, Fla. (AP) - A prominent Republican says he'd consider being Mitt Romney's running mate, but he doubts he'll be asked.

Former Florida Gov. Jeb Bush tells the conservative website Newsmax that Florida Sen. Marco Rubio is "probably the best" choice to share the ticket with Romney. But Rubio has said repeatedly that he's not interested in leaving the Senate.