ABC News projects that Trump will win the New Hampshire Republican primary. He currently leads Haley 53 percent to 46 percent with 15 percent of the expected vote reporting. And based on where ballots remain to be counted, I'd expect that margin to widen.

—Nathaniel Rakich, 538

According to preliminary exit polls, Trump is doing about 10 points better with men than women in New Hampshire. In earlier primary polls, he was running more evenly, or better, with women. With Ramaswamy and DeSantis out of the race (and their endorsement of Trump), Trump likely picked up more support from male voters.

—Meredith Conroy, 538 contributor

The first major news organization — the Associated Press — has called the New Hampshire Republican primary for Trump. Our colleagues at the ABC News decision desk, however, have not yet made a projection.

—Nathaniel Rakich, 538

There are a lot of arguments about whether the current nomination system that we have — influential early contests and the "invisible primary", where fundraising, polls and endorsements show which candidates have support — is effective. There's an argument that this system is effective at "winnowing" candidates who aren't able to unite the party behind them. But in the case of DeSantis dropping out on Sunday — unusual timing — it's not clear that this was especially effective winnowing. From a candidate perspective, maybe. DeSantis lost support as Trump gained it, and he didn't seem to especially strike people as an ascendant presidential figure.

DeSantis's departure from the race was good for consolidating the party around Trump at this stage, which is usually what parties want. But Trump is a complicated figure, and even as the GOP is increasingly his party, it's not totally straightforward. If your takeaway from the Iowa caucuses was that about 40 percent of caucusgoers preferred someone else, then it makes sense that a real contest between Trump and a competitor might have been good to have. Now the Haley campaign is trying to talk about a head-to-head contest. It's hard to know what a two-person race between Haley and Trump would have been like, and pretty difficult to imagine that Haley would be beating Trump now. But competition between Trump and an alternative might have been clearer if it had been a two-person race for longer.

—Julia Azari, 538 contributor

At around 4:30 p.m., Americans for Prosperity Regional Director Greg Moore said on X (formerly Twitter) that he'd heard from sources in the New Hampshire secretary of state office that towns around the state had gone through more than 80 percent of GOP primary ballots available statewide, and that some towns were calling to ask for more to avoid running out. Polls in much of the state closed at 7 p.m Eastern, but a few places are open until 8 p.m.

Now, the Koch-affiliated AFP endorsed Haley to much fanfare earlier this cycle, so high turnout certainly would make Haley supporters feel hopeful about the number of independent voters taking part in the primary, who generally are more likely to support Haley than Trump. Still, ABC News's current total expected vote total in New Hampshire is 330,000 votes. Although that figure may change as the night wears on — it could go higher or lower — that many votes would represent nearly 30 percent of the state's entire voting-eligible population — that is, anyone who is eligible to register and vote. A turnout rate at that mark would be on par with the highest turnout in the state's modern history, which was the highly-competitive 2008 Democratic presidential primary.

—Geoffrey Skelley, 538