Here's a lightning-quick rundown:
* Bernie Sanders and Donald Trump won the Democratic and Republican New Hampshire primaries in landslides, delivering huge blows to their party establishments.
* Sanders defeated Hillary Clinton, whom he virtually tied in the Iowa caucuses last week. Trump defeated a line of mainstream candidates to win, including Marco Rubio, Jeb Bush, and John Kasich.
* The margins of victory were so significant that major networks and the Associated Press called the races shortly after polls officially closed at 8 p.m. ET.
* There was also a furious battle for second place on the GOP side — and Kasich came out the winner. It'll give Kasich, who didn't enter the primary with much money, some well-needed momentum.
* With about 95% of precincts reporting at 11:10 a.m. ET, here are the results: Trump with 35.3%, Kasich with about 15.7%, Cruz with 11.7%, Bush 11.1%, and Rubio with 10.5% for the GOP. For the Democrats, Sanders had 60% and Clinton had 38.3%.
* Christie signaled that he may drop out of the race, saying he would return to New Jersey and "make a decision tomorrow based on the completed results."
* And Rubio, in his concession speech, referenced his poor performance in the GOP debate on Saturday night, when he was criticized for repeating the same talking point over and over.
* For live updates and fallout from the BuzzFeed News team around the nation — including in New Hampshire — go here. It includes full coverage of the night's scenes and speeches.
* It was overall a bizarre few days in New Hampshire. Rubio supporters battled robots at a rally. There is a controversy over the word "pussy." And one guy traveled 45,000 miles to sell Donald Trump buttons.
Here's a rundown of what happened on the Republican side:
Yes, this is really, actually, happening: Donald Trump has won a presidential primary.
New Hampshire was a big test for the businessman, who didn't hit projections during the Iowa caucuses and came in a distant second place to Cruz.
But on Tuesday he overcame four more mainstream GOP candidates — Bush, Kasich, Rubio, and Christie — and dealt a severe blow to the Republican establishment.
Kasich also won a huge battle for the second-place spot, giving him well-needed momentum going into the next primary. Cruz and Bush were battling for third place into the evening.
Trump began his rambling victory speech with: "Wow! Wow. Wow. Wow."
He thanked his deceased parents, brother, family, staff, other candidates, and the state of New Hampshire — before offering a critique of Sanders.
"He wants to give away our country, we're not going to let it happen," he said of the Vermont senator. "We wish him a lot of luck but we're going to make America great again and we're going to do it the old-fashioned way."
The speech then meandered into a series of forceful talking points, including but not limited to: trade deals, bolstering the military, building an "incredible" wall on the border, and repealing and replacing Obamacare.
"I am going to be the best jobs president that God ever created," Trump said.
The result was, in standard Trump fashion, a piecemeal smattering of independent clauses.
"In a nutshell," Trump said, "we're going to make great trade deals, rebuild our military — it's going to be so strong, nobody is going to mess with us. Nobody. We're going to take care of our vets."
"The world is going to respect us again, believe me," he told the crowd while flanked by his wife and family.
Trump's victory aligned with months of New Hampshire polls, which had the real estate developer leading since July.
Kasich's speech focused on thanking his supporters and telling the New Hampshire crowd that they taught him to "slow" things down and listen to people.
"We never went negative, because we have more good to sell than to spend our time being critical of somebody else," Kasich said. "And maybe, maybe just maybe, at a time when clearly change is in the air, maybe, just maybe we're turning the page on a dark part of American politics because tonight, the light overcame the darkness of negative campaigning. And you made it happen."
In a speech that emphasized unity and civility, Kasich urged Americans to slow down and listen to their neighbors.
"That's the America I know, where we slow down our lives," he said. "We slow down our lives, and let's just leave this hall tonight, and I would ask you to just reflect on this. Because you see we're all made to change the world. We're all made to be a apart of the healing of this world."
Kasich continued, "From this day forward, I'm going to go slower, and spend my time listening, helping, and bringing people together to fix our great country."
And on the Democratic side:
Bernie Sanders defeated Hillary Clinton in a landslide, handing the Vermont senator a huge boost after the two essentially played to a tie in the Iowa caucuses last week.
New Hampshire was a long-expected win for Sanders. He led in the polls for months and is received well by white liberal voters.
He will have a tough road ahead, though: Clinton is expected to do well in the more diverse contests in states that have larger cities, such as the upcoming South Carolina primary on Feb. 27.
Still, Sanders delivered a long and impassioned speech at his victory party, touching on his signature issues of income inequality and campaign finance reform.
The raucous crowd loved it, cheering loudly at every applause line.
"We have sent a message that will echo from Wall Street to Washington," he said. "The government of our great country belongs to all of the people and not just a handful of wealthy campaign contributions and their super PACs."
Sanders said, "Because of a huge voter turnout, and I say huge!" — the crowd yelled YUUUGE, as Trump often does — "we won."
The win, he said, "harnessed the energy and excitement that the Democratic Party will need to succeed in November," and "that is what will happen all over this country."
He said, "Tonight we serve notice to the political and economic establishment ... that the American people will no longer accept a corrupt political campaign finance system that is undermining American democracy and we will not accept a rigged economy ... while almost all new income and wealth goes to the top 1%."
Sanders also touched on his foreign policy, infrastructure, immigration, and Social Security planks.
"We must pursue the fight for women's rights, gay rights, disability rights," he said. "We must against stronger and stronger opposition protect the right of a woman to control her own body."
He also alluded to his long electoral road ahead.
"They are throwing everything at me but the kitchen sink," he said, "and I have a feeling that kitchen sink is coming soon."
In a "time of massive wealth and income inequality," he said, "the rich and corporations "will start paying their fare share of taxes."
The win, Sanders said, "was nothing short of the beginning of a political revolution. It will bring tens of millions of our people together. It will bring together blacks and whites, Latinos, Asian Americans, Native Americans, straight and gay, male and female, people who were born in America and people who immigrated here.
"We will all come together," he said, "to say loudly and clearly that the government of our great nation belongs to all of us."
Minutes earlier, Clinton took the stage and managed a forceful speech that looked to the contests ahead and flexed her progressive credentials.
"I still love New Hampshire," Clinton said in her concession speech. "Now we take this campaign to the entire country.
"We're going to fight for every vote in every state. ... I will work harder than anyone to actually make the changes that make your lives better."
Clinton then mentioned her positions on pushing for rights for women, LGBT people, and the poor.
"I will fight to reign in Wall Street, and you know what?" she said. "I know how to do it."
"I know I've had a blessed life, and I also know what it is to stumble and fall," Clinton said. "It's whether you get back up."
In a memo released when the polls closed Tuesday night, Clinton campaign manager Robby Mook conceded the race and downplayed the significance of New Hampshire and Iowa.
Mook laid out the campaign's strategy to win the nomination in March.
Noting that Iowa and New Hampshire largely consist of white voters, Mook emphasized Clinton's strengths with African-Americans and Hispanics as states with more diverse populations hold their primaries and caucuses in the coming weeks and months.
"Hillary's high levels of support in the African-American and Hispanic communities are well known," the memo reads.
The memo also lays out what the campaign sees as Sanders' vulnerabilities, mainly positions not in line with President Barack Obama's priorities and his foreign policy experience and knowledge.
For more scenes from the Sanders victory party, check out this piece. And here's some quick analysis from BuzzFeed News reporter Evan McMorris-Santoro, who attended the event:
And: What was Sanders up to while the returns came in showing him destroying Clinton? Literally ballin'.
In Merrimack, a town of 27,000, there is one polling station. Here's how that went:
Merrimack resident Jacqui Lantagne, 30, told BuzzFeed News that she, along with dozens of other frustrated voters, had parked their cars in the lots of businesses along the side of Daniel Webster Highway and were plodding through the snowy terrain on foot. There were cars as far as the eye could see, she said.
"It is insane traffic. It's not like this at all normally in New Hampshire, especially in Merrimack," Lantagne said by phone, shivering and huffing in the 21-degree evening air. Despite purposely leaving her job at a local college for the day early, around 4:30 p.m., she'd given up on driving and parked at a children's playground a half-mile from the school. "The one voting location they have is a little bit landlocked and tough to get to, so it's creating a really big bottleneck."
Read more here.
Here is the most bizarre moment of this political cycle, part 1: the "pussy" controversy.
Trump called Cruz a "pussy" on Monday, stirring a controversy about political correctness and the kind of language that is appropriate in a political campaign.
The insult came during a rally in Manchester. Trump was criticizing the Texas senator for what he said was a failure to support the use of waterboarding during interrogations when one of his supporters shouted the word. The real estate magnate then repeated it.
"She just said a terrible thing," Trump said. "You know what she said? Shout it out because I don't want to — OK, you're not allowed to say, and I never expect to hear that from you again. She said — I never expect to hear that from you again! — she said he's a pussy. That's terrible. Terrible," Trump said, throwing up his hands.
Cruz responded the next day, accusing Trump of stooping to "profane insults" as a way to avoid talking about his own record. "Donald doesn't handle losing very well," said Cruz, who recently defeated Trump in his party's Iowa Caucus.
Trump defended himself in an interview with NBC later that day, saying that the term "wasn't [his] word" and that he'd merely repeated what a supporter had said. He then promised that, were he to be elected president, he "would act differently."
But then Trump changed his tone, insisting in a radio interview that he and the crowd were merely "having a great time" and that he "was just kidding."
"You know, people are so politically correct today," Trump said. "It's absolutely ridiculous."
In the past, Trump has drawn criticism from Republicans and Democrats alike for what some have called sexist comments and insults. At various points, the candidate has said Hillary Clinton "got schlonged" by Barack Obama during the Democratic primary in 2008, and that Fox News anchor Megyn Kelly had "blood coming out of her whatever."
Here's video of Cruz responding:
Here is the most bizarre political moment of this election cycle, part 2: Rubio's repetition.
At the GOP debate on Saturday, Rubio withered under some intense fire from Christie, who criticized the Florida senator for repeating canned phrases about Obama instead of answering a question directly.
The attack cut into Rubio's momentum from his strong third-place finish in Iowa.
As the week went on, Rubio couldn't seem to shake the moment.
Rubio, as it turns out, is known for his anxiousness. As BuzzFeed News reporter McKay Coppins reports:
To those who have known him longest, Rubio's flustered performance Saturday night fit perfectly with an all-too-familiar strain of his personality, one that his handlers and image-makers have labored for years to keep out of public view. Though generally seen as cool-headed and quick on his feet, Rubio is known to friends, allies, and advisers for a kind of incurable anxiousness — and an occasional propensity to panic in moments of crisis, both real and imagined.
This jittery restlessness has manifested itself throughout Rubio's life, from high school football games in Miami to high-profile policy fights in Washington — and in some ways, it's been the driving force in his rapid political rise.
Here's Rubio repeating the scripted line that drew all the criticism on Monday:
And on Tuesday, because this is the natural course of things, robot Rubios got roughed up outside a rally for him. They were members of anti-Rubio groups:
Rubio went on to address the debate flop during his speech after the primary:
Reporting by Evan McMorris-Santoro, McKay Coppins, Rosie Gray, Ruby Cramer, Tarini Parti, and Jim Waterson in New Hampshire; Katherine Miller, Kyle Blaine, Ema O'Connor, Andrew Kaczynski, Chris Massie, Megan Apper, David Mack, and Tom Namako in New York; and Dan Vergano in Washington, D.C.