Vermont Sen. Bernie Sanders (I) has pulled into a statistical tie with Hillary Clinton in New Hampshire, according to a new poll.

The WMUR-CNN survey released Thursday finds Clinton takes 43 percent support in the Granite State, compared to 35 percent for Sanders.

Because the poll has a 5.2-percentage-point margin of error, the results mean Clinton and Sanders are in a statistical tie, according to the University of New Hampshire Survey Center, which conducted the poll.

It also noted that Clinton’s edge on her closest opponent has narrowed significantly since the same poll was conducted in May, when Clinton held a commanding 31-point lead over Sen. Elizabeth Warren (D-Mass.), who insists she’s not running for president.

In that survey, the total support for Warren and Sanders combined still trailed Clinton by 18 percentage points.

The poll’s margin of error means Clinton could also hold as much as an 18-point lead over Sanders.

Still, the new survey coupled with other recent polls suggests the Vermont senator is building support in the nation’s first primary state.

The WMUR/CNN survey is the third in recent weeks to show Sanders closing the once-huge gap that separated him from Clinton in New Hampshire. A Suffolk University poll released last week showed Clinton with a 10-percentage-point advantage over Sanders, and a Morning Consult poll showed Clinton’s lead at 12 points.

Clinton is boosted in New Hampshire by overwhelming support from women voters, who favor the former secretary of State 51 percent to 30 percent over Sanders. The Vermont senator has a 10-point advantage among men.

Sanders has attracted a great deal of energy on the campaign trail.

He’s pulling the biggest crowds of any candidate and has had to relocate some of his events to larger arenas to accommodate the crowds.

At one campaign stop in Colorado last week, Sanders turned out more than 5,000 supporters.

According to a NBC News/Wall Street Journal poll released this week, 62 percent of Democrats want Clinton to face a substantial primary challenge, believing it will make her stronger in the general election.

Only 35 percent said they’d like to see Clinton go through an easy primary that unites the party ahead of the general election.

Still, Clinton remains the prohibitive favorite. According to the RealClearPolitics average of polls, she has a 50-percentage-point lead over Sanders nationally.

Both candidates are wildly popular among Democrats in New Hampshire. Seventy-four percent said they have a favorable view of Clinton, compared to 19 percent who view her negatively.