Vermont Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I) leads the Democratic field in New Hampshire, but South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegThe Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield MORE is on the rise and running neck-and-neck with former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE, according to a new poll.

The latest Granite State Poll from the University of New Hampshire finds Sanders at 30 percent, followed by Biden at 18 percent and Buttigieg at 15 percent. No other candidate has more than 5 percent support. Seventy-seven percent of Democrats said they’re still trying to decide who to support.

There is surging interest in Buttigieg among Democratic voters.

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In the previous survey from late February, Sanders was at 26 percent, followed by Biden at 22 percent. Buttigieg was only at 1 percent in that survey.

Buttigieg has since raised millions of dollars and seen a spike in interest following a CNN town hall event and several viral internet moments.

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The first-in-the-nation primary state of New Hampshire will be a critical test for the massive Democratic field, but particularly for Biden, Sanders and Sen. Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE (D-Mass.), who hail from nearby states and will be expected to perform well in the northeast.

Warren is in fourth place in the poll at 5 percent support.

The Granite State Poll of 549 Democrats was conducted from April 10 to April 18 and has a 4.2 percentage point margin of error.