Frontloading HQ here explains the Republican delegate rules in New Hampshire. Even though preliminary election returns show that Donald Trump only has about 34% of the popular vote, because he is the winner, he will get all the unallocated delegates. The vote for candidates who poll less than 10% goes into the Trump column.
Ballot Access News
Edited By Richard Winger
It appears that Trump will get 11 of 23 delegates, picking up 3 delegates because other candidates failed to get to the 10% threshold.
Your headline is in error, if “most of” means a majority.
Of course as we learned in 2012 the delegates may not matter if the party decides to rewrite the rules on the fly.