ABC News projects that Trump will win the Iowa Republican caucuses. This surprises absolutely no one, given that Trump had a more than 30-point lead in 538's Iowa polling average heading into tonight's event. However, the drama tonight wasn't about Trump's outcome, but second place: Can Haley jump ahead of DeSantis and set herself up for a nice result ahead of New Hampshire's primary, where she's stronger? Or will DeSantis pull off a comeback story of sorts by grabbing the silver medal? Stay tuned!

Who will benefit from cold-induced low turnout? I'm not actually sure. Trump seems like the simplest answer. There are a couple of ways to think about this — it seems intuitive that the cold could be more of a deterrent for older voters, but I don't know that there's much evidence for that. The other consideration is whether one of the candidates is more dependent on low-propensity voters — those with less consistent voting histories. Historically, these voters have been Trump's bread and butter.

Trump might benefit from low turnout, but I've also been thinking about Trump's support from first-time caucusgoers. Will they stick with it and show up? He's also traditionally relied on support in rural areas, and I wonder if there will be travel concerns on unplowed back roads. At the same time, he has the enthusiasm, as others have noted.

I agree that Trump is probably the beneficiary of the extreme cold given how devoted his supporters are, but I wonder also if Haley will disproportionately lose out. There’s been a lot of reporting about how she’s been attracting some support from independents and even Democrats. If you’re a Democrat trying to make a Haley bank shot, I feel like you’re probably less likely to venture out in this weather than someone with a greater connection and obligation to the Republican Party. It’s probably a small slice of potential caucus-goers, but it could make a difference.

Other than his one-vote loss in Johnson County, it's hard to find much that went wrong for Trump tonight. He won a majority of the vote and carried pretty much every demographic category (especially ones that make up the bedrock of the GOP primary electorate). The most Trump-like candidate in the race, who was still siphoning off a chunk of MAGA votes, dropped out and endorsed him. His two main challengers effectively tied, denying either of them the momentum or comeback narrative they desperately sought in Iowa. And you have to imagine the deep-pocketed donors who flooded Iowa with tens of millions of dollars of pro-Haley and pro-DeSantis advertising have to be wondering about their return on investment.

The New Hampshire primary is in eight days and might well be the toughest contest for Trump of the entire primary process, so it's good for him he can approach it with a full head of steam. The window of opportunity for any non-Trump candidate to alter the course of this race, such that it was ever open, is rapidly closing.

—Jacob Rubashkin, Inside Elections