A stunning new poll has Sen. Bernie SandersBernie SandersNew Alexandra Pelosi documentary brings together GOP, Dem members Sanders: FBI inquiry of wife is 'pathetic' attack Why UK millennials voting for socialism could happen here, too MORE (I-Vt.) beating presumptive Democratic presidential front-runner Hillary ClintonHillary Rodham ClintonJeff Bridges: ‘I’m rooting’ for Trump as a human being Leading Pelosi critic Moulton once penned effusive praise for her: report Dems land top recruit for Ros-Lehtinen's Florida district MORE in New Hampshire.

Sanders has eclipsed Clinton by a 44 to 37 percent margin, according to a new Franklin Pierce University/Boston Herald poll that was first reported by the Boston newspaper Tuesday evening.

The previous FPU/Herald poll taken in March had Sanders trailing Clinton 44 to 8.

Today's poll is the first to show Sanders, whose liberal policies are popular with the Democratic base, ahead of Clinton in New Hampshire.

And it comes as reports surfaced that Clinton will turn over her private email server that she used while leading the State Department to Justice Department officials.

Meanwhile, Vice President Joe BidenJoe BidenAmazon primed for merger battle Delaware pool where Biden worked as lifeguard named after him The Hill's 12:30 Report MORE garnered 9 percent, with the other remaining candidates hovering at around 1 percent, according to the poll.

Pollsters telephoned 442 likely Democratic voters in New Hampshire between Aug. 7 and Aug. 10. The poll has a margin of error of plus or minus 4.7 percentage points.

Clinton maintains a dominant lead in other polls. During her failed bid for presidency in 2008, she surged to narrowly win the New Hampshire primary after losing to then-Sen. Barack ObamaBarack ObamaObama ethics czar: Trump fundraiser at his DC hotel ‘illegal’ Trump greeted by protesters at campaign fundraiser Six easy wins to improve transparency on Capitol Hill  MORE in the Iowa caucuses.