Trump won nearly every voting bloc in the Iowa Republican caucuses tonight, according to NBC News Entrance Poll results, but he did particularly well among a few groups.

His best showing came from voters who don’t have a college degree (65%), those who identify as very conservative (61%), voters over 65 years old (55%) and white evangelicals (53%).

NBC News Decision Desk has projected Trump as the winner of the Iowa Republican caucuses.

An NBC News entrance poll of Iowa GOP caucusgoers found that Haley is winning 53% of those who think Biden legitimately won the 2020 election. DeSantis is winning 26% of those voters while Trump is winning just 10%.

Those voters are making up just 30% of the Iowa caucus electorate. Meanwhile, 66% of caucusgoers think Biden did not legitimately win the 2020 election, and 68% of those voters are backing Trump. Just 16% of those voters are picking DeSantis while an even smaller 6% share are caucusing for Haley.

Diving deeper into the numbers, 40% of DeSantis voters think Biden legitimately won the 2020 contest, while 54% do not. For Haley, the split is 79% yes to 19% no. And 90% of Trump's voters think Biden did not legitimately win, while just 6% think he did.

NBC News is currently estimating that there will be about 130,000 caucusgoers, which is a lower turnout than expected. The NBC News Decision Desk made the estimate based off of entrance poll interviews and initial vote returns.

The caucuses come as Iowa faces subzero temperatures. In Des Moines, the temperature dipped to about -4 degrees, but shot down to -21 degrees when factoring in wind chill, according to the National Weather Service.

A majority of white evangelicals backed Trump in tonight's Iowa Republican caucuses, according to early NBC News entrance poll results.

Trump's support among white evangelicals (51%) is up 30 points from the 2016 caucuses, according to entrance poll results. 

White evangelicals, or born-again Christians, have historically made up a large voting bloc in Iowa. In 2016, white evangelicals made up 62% of all Republican caucus attendees. That number has decreased to 54% this year.  

Trump arrived at a caucus location tonight to deliver a short speech to Iowans casting ballots.

The crowd appeared to be very receptive to the former president, with audience members frequently punctuating his speech with applause and shouts of "We love you!" It was a stark contrast to the caucusgoers' reaction to the previous speaker, Hutchinson, who is lagging in the polls.

During his brief remarks, Trump slammed Biden and tried to paint a contrast between their approaches to foreign policy and immigration.

Trump also said that he would always keep Iowa as the first state in the presidential nominating contest, a dig at Democrats' decision to make South Carolina the first contest for their candidates.

NBC News projects that Donald Trump has won the Iowa Republican caucuses, with 0.2% of the votes counted so far.

See the latest results here.

Nearly two-thirds of Iowa Republican caucus participants said that Trump would be fit to be president if he was convicted of a crime, according to early NBC News entrance poll results. 

The survey found that 64% said if Trump were to be convicted of a crime, they would consider him fit to be president, while 31% said he would not be fit for the presidency.

Among those who said Trump would be fit to be president if he was convicted of a crime, 73% caucused for him today. 

Large portions of some key Republican voting groups also said they would consider Trump fit if he was convicted. 

A majority of Iowa caucusgoers who identify as very conservative (62%) said Trump would be fit to be president if he was convicted of a crime, along with a majority of voters who identify as evangelical or born-again Christian (58%) and men (58%).

Vice President Kamala Harris, in an interview today with ABC News, fired back at Haley, who has repeatedly framed her campaign as opposition to "a Kamala Harris presidency."

Harris was asked about Haley's criticisms and responded with a laugh saying, "Let’s see what Iowa says to her!"

The vice president also said she was confident President Joe Biden would be re-elected in November. "Let me just tell you this: No matter who the Republican nominee is, we’re winning," Harris said.

Trump will head to Phoenix for an Arizona Republican event on Jan. 26, three days after the New Hampshire primary and two weeks before the Nevada caucus.

Arizona will hold its primary on March 19 — the date that the Trump team is targeting as the date it’ll hit the delegate threshold to be the party’s presumptive nominee.