Trump, the longtime GOP frontrunner, has increased his lead over Cruz from 14 points in December to 19 points in the new Franklin Pierce-Herald poll, conducted Jan. 20-24 among 444 likely GOP primary voters.

Ohio Gov. John Kasich has climbed to third place with 12 percent support, while former Florida Gov. Jeb Bush gets just 9 percent and Florida Sen. Marco Rubio dropped to 8 percent. New Jersey Gov. Chris Christie also dropped in the last month and now has just seven percent of the vote, according to the poll.

More than half of GOP voters now say they have made a firm choice, while 76 percent of Trump’s supporters say they won’t change their minds.

The new poll shows the billionaire businessman getting his highest favorability rating yet in New Hampshire at 58 percent, while 39 percent of voters view him negatively.