Democratic presidential hopeful Bernie Sanders has rocketed past longtime front-runner Hillary Clinton in New Hampshire, a stunning turn in a race once considered a lock for the former secretary of state, a new Franklin Pierce University/Boston Herald poll shows.

Sanders leads Clinton 44-37 percent among likely Democratic primary voters, the first time the heavily favored Clinton has trailed in the 2016 primary campaign, according to the poll of 442 Granite-Staters.

Vice President Joe Biden got 9 percent support in the test primary match-up. The other announced Democrats in the race, former Maryland Gov. Martin O’Malley, former Rhode Island Gov. Lincoln Chafee and former Virginia Gov. Jim Webb, barely register at 1 percent or below.

The live interview phone poll was conducted Aug. 7-10 and has a margin of error of plus or minus 4.7 percentage points.