With 70 percent of the expected vote reporting in Vermont, Trump and Haley are tied again at 48 percent each. If Haley wins there, it might compel her to stay in past tonight, but the overall delegate math is still against her.

—Monica Potts, 538

Want to know more about territories like American Samoa, which participate in the nomination process but aren't states — and thus don't have Electoral College votes or representation in Congress? I recommend this fascinating book, "The Not-Quite-States of America" by journalist Doug Mack. It explores the contradictions in the status of these areas and how it affects the people who live there.

—Julia Azari, 538 contributor

Well, well, well. It turns out neither Trump nor Biden will sweep every presidential nominating contest this year. ABC News can confirm that Biden has lost the Democratic caucuses in the territory of American Samoa to Jason Palmer.

Who is Jason Palmer, you ask? One of the many no-name candidates who runs for president every year. According to DDHQ’s Derek Willis, Palmer actually visited American Samoa to campaign, which explains how he was able to accomplish something that neither Marianne Williamson nor Dean Phillips has been able to do this year.

P.S. What’s up with American Samoa and Democratic caucuses? You may recall that, back in 2020, it was the only state or territory to vote for Michael Bloomberg.

—Nathaniel Rakich, 538

—Dan Hopkins, 538 contributor

On Sunday, Republicans in Washington, D.C., voted for Haley by nearly 30 percentage points in the GOP's party-run primary, giving her all 19 national delegates from the nation's capital. This marked her first victory anywhere in this year’s primary contest, and the first ever primary or caucus victory for a woman in the history of Republican nomination races. Yet the other contests that took place just ahead of Super Tuesday otherwise showcased Trump's strong hold over his party's base. This included victories on Saturday in caucus-convention races in Idaho, Michigan and Missouri, and in North Dakota's Republican caucuses on Monday.

In Michigan, Republicans gathered at Saturday's state party convention to allocate 39 national delegates from the state’s 13 congressional districts (three per district). The voters consisted of precinct delegates mostly elected at the August 2022 state primary as well as Republican elected officials, and they handed Trump all 39 district-level delegates. This result brought Trump's Michigan haul to 51 of the state's 55 delegates, after he had already won 12 of its 16 at-large delegates in the Feb. 27 primary.

The Michigan GOP's split primary-caucus approach came about in part because national Democrats added Michigan to the early part of their presidential primary calendar, prompting the Democratic-controlled state government to shift the state’s primary date into late February. Since the new date violated the national GOP's calendar rules, Michigan Republicans used a workaround whereby the primary results would allocate the state's at-large national delegates, but the state party didn’t formally make the allocation until March, at Saturday’s caucus-convention that also allocated district-level delegates.

Trump also swept caucuses in Idaho and Missouri on Saturday, and then North Dakota on Monday. In Idaho, Trump won 85 percent of caucusgoers, easily surpassing the state's 50 percent winner-take-all threshold to capture all 32 of Idaho's national delegates. In Missouri, Trump won every state- and congressional district convention delegate elected at local caucuses around the state, all but guaranteeing that he will sweep all 51 national delegates when the district and state conventions formally allocate delegates in April and May, respectively. And in a near-repeat of Idaho, Trump won 84 percent of caucusgoers in North Dakota on Monday to claim all 29 of the state’s national delegates.

—Geoffrey Skelley, 538