Nathaniel just mentioned Nikki Haley's strength in the well-educated, affluent communities around Boston. If you want to learn more about that group, its connection to the defense industry, its ambivalent views on racial integration, and its long-term movement into the Democratic coalition, check out historian Lily Geismer's book "Don't Blame Us".

—Dan Hopkins, 538 contributor

Trump is speaking now (right on schedule, for once!) and it's one of those "pivot to the general" speeches candidates give once they win the nomination. But it's also like he's playing his greatest hits on 1.5x speed: In the last five minutes, he has talked about immigration (saying migrants are coming in on airplanes), ISIS (he says he wiped them out in four weeks), inflation (chastising "Bidenomics") and energy generation, and he attacked Biden for his age (at one point claiming that the president cannot lift a beach chair which "weighs nine ounces").

One thing missing? Any mention of Haley. Remember, Trump is not technically the nominee until the convention says so, and he's not the presumptive nominee until he wins enough delegates. He is having a super Super Tuesday tonight, but he's not quite there ... yet.

—G. Elliott Morris, 538

Dean Phillips's tepid campaign may not last until the morning. Phillips has previously stated that he would drop out and endorse the likely Democratic nominee if his campaign wasn't viable after Super Tuesday. So far, his highest level of support tonight is in Oklahoma, where he's currently pulling 9 percent of the Democratic primary vote. That's closely followed by his home state of Minnesota, where he's winning a similar level of support. But at least he can say he won something today: tiny Cimarron County in the Oklahoma panhandle, where he currently leads Biden by five votes out of 21 total that were cast.

—Cooper Burton, 538

Trump is winning Massachusetts 61 percent to 36 percent, but as you can see in the map below, Haley is winning Boston and many of its well-to-do western suburbs like Concord, Wellesley and Weston. While these towns are now solidly Democratic, they are also home to a lot of the fiscally conservative, socially liberal voters who have supported moderate Republicans for governor like Mitt Romney and Charlie Baker. It’s basically the exact kind of well-educated voter that hates Trump but misses the old Republican Party, which Haley has become an avatar for.

—Nathaniel Rakich, 538

While we don’t have data for every Super Tuesday state, in the ones we do, Haley’s favorability lags far behind Trump’s among Republican voters. In Texas, an early February poll from YouGov/The University of Texas shows GOP voters there have a particularly dim view of Haley; the survey shows Haley 4 percentage points underwater among Republicans, with a 36 percent favorability rating and a 40 percent unfavorability rating, while Trump is has a massive positive net approval rating of 71 percent (83 percent favorable and just 12 percent unfavorable).

While not quite as dismal as in Texas, Haley’s numbers in other Super Tuesday states lag far behind Trump’s. For example, a Morning Consult/Bloomberg poll from mid-February in North Carolina has Haley at net +18 percent favorability (52 percent favorable, 34 percent unfavorable) among registered Republicans, compared to net +64 percent favorability for Trump (81 percent favorable, 17 percent unfavorable). An early February poll in Maine from Pan Atlantic Research shows Haley at net favorability +15 percent favorable (50 to 35 percent), compared to Trump’s net +52 percent favorability rating (76 to 24 percent).

In Vermont, polls suggest Haley might perform a little better than in other states, but her favorability is underwater, according to an early January survey from the University of New Hampshire Survey Center. That survey had Trump with a lower favorable rating than he enjoys in other states, net +20 points (57 to 37 percent), but Haley had a net favorability of -9 points among likely primary voters: 32 percent favorable and 41 percent unfavorable.

—Mary Radcliffe, 538