Jeb Bush has tried everything. His campaign allies have blanketed the airwaves with almost $30 million in ads. Aiming to shake the "low-energy" tag and prove his toughness, Bush hit Donald Trump as a carnival barker unfit for the serious job of being President. He attacked Sen. Marco Rubio, suggesting his former protege was a dilettante in a hurry. He cut staff, hired a debate coach, and pledged that "Jeb Can Fix It." Bush is now polling at 3% -- and dropping. The 3% figure puts Bush in sixth place in the national GOP race, according to the CNN/ORC poll...