(CNN) Support for Pete Buttigieg jumped 14 points in a new Granite State Poll from the University of New Hampshire, launching him into the first-in-the-nation primary state's top tier of candidates.

The poll, conducted by the University of New Hampshire's The Survey Center, shows the young mayor of South Bend, Indiana, joining Sen. Bernie Sanders of Vermont and former Vice President Joe Biden at the top of the increasingly large Democratic presidential pack. Sanders and Biden have generally been dominating the field in national and state polling since the cycle began.

Sanders has been top of the list since last year in New Hampshire in the University of New Hampshire's polling, helped by its close proximity to his home state of Vermont, with three-in-ten likely Democratic primary voters saying they'll vote for him. While Biden usually dominates national surveys, he comes in second in New Hampshire, with 18%.

Buttigieg rounds out the top tier of candidates with 15%.

It's another strong showing in a recent poll for Buttigieg, who has gone from being a mostly unknown Midwestern mayor to one of the spring's hottest names in the Democratic presidential race. Polls from the last two months show the Hoosier is consistently finishing in third in early state polls behind Sanders and Biden.

Read More