First things first, RealClearPolitics declares Trump won the NH primary. He got 54.6% of the vote, to Haley's 43.2%.
CNN did exit polling of New Hampshire primary voters and found several interesting things.
Voters who were registered as Republicans broke heavily for Trump, the exit poll finds, with roughly three-quarters favoring him.
Roughly 7 in 10 of the New Hampshire voters backing Trump said they were registered as Republicans.
Haley’s backers present a near mirror image: about 7 in 10 said they were registered as undeclared prior to Tuesday.
Talking heads on Brit Baier's news tonight made an interesting point. If Haley wants to retain her plausibility for 2028, she will drop out before the SC primary, and perhaps even endorse Trump.
If she stays in the race and loses her home state to Trump, as appears would be likely, she probably loses the 2028 option unless Trump loses the general election this November. That would give her a "I could have won it" argument.