Republican presidential hopeful Marco Rubio on Thursday vaulted into second place in a daily tracking poll, but still trails front-runner Donald Trump by double-digits in the New Hampshire primary Trump leads the GOP field with 36 percent support, according to the WHDH/UMass Lowell poll, followed by the Florida senator with 15 percent support, Sen. Ted Cruz (R-Texas) with 14 percent support, former Florida governor Jeb Bush with 8 percent support and Ohio Gov. John Kasich with 7 percent support.