Trump leads the head-to-head poll by two points, 44-42, in a poll conducted in the days following the FBI's announcement about continued investigation into Clinton's emails.
When third-party candidates are included, Trump leads by a single point, 40-39, with Libertarian Gary Johnson polling at 10 percent and Green Party candidate Jill Stein at 3 percent among likely and leaning voters.
Clinton's lead fell in New Hampshire from a five point lead, 46-41, when MassINC/WBUR polled the state mid-October. She held a smaller, three-point lead, 41-38, when third party candidates were included in the poll, with Johnson at 11 percent and Stein at 3 percent.
The MassINC/WBUR poll surveyed 500 likely New Hampshire voters via live telephone interview from Oct. 29-Nov. 1, with a margin of error of plus or minus 4.4 percent.
TPM's PollTracker Average for the presidential election in New Hampshire shows Clinton leading Trump, 45.3 to 41.2.