Super Tuesday primaries 2024: Trump and Biden dominate, Haley drops out

It's just past 2 a.m., and we've got major results in from most of Super Tuesday's wide-ranging slate of primary contests. So far, Trump has won at least 12 of the 15 states holding GOP presidential nominating contests, while Haley has won Vermont — though whether she hits a 50 percent (plus one vote) threshold of victory there will determine the exact number of delegates she takes home.

Either way, with an estimated 943 total delegates to Haley's 86 so far, per ABC News projections, Trump's well on his way to securing the magic delegate majority number of 1,215 — though it will take at least another week. He's so far secured 667 delegates tonight and is likely to hit the 769 mark that Elliott noted earlier would set him up to mathematically clinch the nomination on March 12. Of course, we're all watching to see if Haley drops out sooner.

In other highlights:

- As expected, Republican Lt. Gov. Mark Robinson and Democratic state Attorney General Josh Stein secured their parties' respective nominations, and will go head to head in what's expected to be a close general election contest for governor.

- Rep. Colin Allred locked up the Democratic nomination in Texas's Senate race, and will face off against Sen. Ted Cruz in the general.

- Democratic Rep. Adam Schiff secured not only the top spot in a top-two primary, but also a likely glide path to the nomination, as the second spot on November's ballot went to Republican Steve Garvey instead of a second Democrat.

We're still tracking a dozen-odd downballot races that have yet to be projected, and awaiting presidential primary results in Utah and Alaska, so we'll see you back here tomorrow ... er, later today, with more results and analysis!

—Tia Yang, 538

ABC News projects that Brandon Gill will be the Republican nominee in Texas's 26th Congressional District. Because this district is solidly red, that means he is extremely likely to be the seat's next representative, succeeding the retiring Michael Burgess. Gill is a proud member of the MAGA wing of the party; he was endorsed by Trump and is also the son-in-law of conservative political commentator Dinesh D'Souza, who made the documentary "2000 Mules," which falsely alleges voter fraud in the 2020 election.

—Nathaniel Rakich, 538

Here are a few more projections from our colleagues at the ABC News decision desk:

- In California's 40th District, a swing seat, Republican Rep. Young Kim will face off against Democrat Joe Kerr in November.

- In Alabama's 2nd District, Democrats Shomari Figures and Anthony Daniels will advance to an April 16 runoff, the winner of which will be favored to win this newly drawn seat in November.

- In North Carolina's 6th District, Republicans Addison McDowell and Mark Walker will advance to a May 14 runoff. The winner will be virtually guaranteed to be heading to Congress next year, as this district was recently redrawn to be safely Republican.

- In California's 20th District (Kevin McCarthy's old seat), Republican Vince Fong will be one of the candidates advancing to the November general election. His opponent is still TBD.

—Nathaniel Rakich, 538

As my colleagues have already noted, the Republican primary is essentially over. But Haley's Vermont victory is the first time a Republican woman will win a state's presidential primary. (She also won the primary in D.C.) So, check a box for a broken record. But I had my eye on Republican and Democratic women in downballot races tonight, and overall it looks like Republican women without their party's or Trump's endorsement struggled to win in places where they have a good chance of winning in November. An exception is in North Carolina's 1st District, where wealthy business owner Laurie Buckhout is the projected winner. That seat will be tight contest in November. As of writing this, Democratic women are looking to be doing well in safely blue districts, like California's 12th and 29th, and Texas's 32nd. But tonight's results suggests the senators from California will both be men, after decades of female leadership in those seats. I'll continue to watch women's progress in both parties for 538, to identify trends and whether more records will be broken.

—Meredith Conroy, 538 contributor