Despite an endorsement and campaign help from Maine Gov. Paul LePage, Donald Trump came in second.
Ohio Gov. John Kasich trailed in third with a considerably lower percentage.
Maine isn't a big prize, with only 23 delegates at stake. And since no candidate is projected to get more than half of the votes, those 23 delegates will be doled out on a percentage basis.
Maine's Democratic caucus will be held Sunday.
This video includes images from Getty Images and clips from Bangor Daily News.