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

538 tracked how Trump and Haley did, plus key U.S. House and Senate races.

March 5 was Super Tuesday — the biggest election day of the year until the one in November! With former President Donald Trump projected to win 14 of the day's 15 GOP presidential nominating contests, former U.N. Ambassador Nikki Haley announced Wednesday morning that she is suspending her campaign.

It was also the first downballot primary day of 2024, with important contests for Senate, House and governor in states like Alabama, California, North Carolina and Texas.

538 reporters, analysts and contributors broke down the election results as they came in with live updates, analysis and commentary. Read our full live blog below.


That's a wrap!

Well, reader, we were determined to keep this live blog going until every Super Tuesday race had been resolved, but even we have our limits. In preparation for next week's primary live blog, we're wrapping this one up. Here's where things stand in all the races we're still tracking:

- With 99 percent of the expected vote reporting in California's 16th District, we're still not sure who will join Democrat Sam Liccardo in the general election. Democrat Evan Low and Democrat Joe Simitian both currently have 17 percent of the vote, and Low is just 63 votes ahead of Simitian.

- With 99 percent of the expected vote reporting in California's 45th District, Republican Rep. Michelle Steel is a safe bet to advance, but it's a close race for second. Democrats Derek Tran and Kim Nguyen-Penaloza are both at 16 percent, with Tran just 256 votes ahead.

- With 98 percent of the expected vote reporting in the Republican primary for North Carolina's 8th District, Mark Harris is at 30.4 percent, just above the 30 percent threshold he needs to avoid a runoff. The AP has gone ahead and called the primary for Harris, but ABC News has not yet reported whether Harris will win outright or be forced into a runoff.

- With 99 percent of the expected vote reporting in the Democratic primary for Texas's 32nd District, Julie Johnson is similarly hovering at 50.4 percent, which would just barely be enough to avoid a runoff. While the AP has called this race for Johnson, ABC News has not yet reported whether a runoff will be needed.

—Nathaniel Rakich, 538


New projections in California's 20th and 31st

We've got answers on two California House races that were still outstanding! In California's 20th District, ABC News reports that Republican Mike Boudreaux will make the general election, where he will face fellow Republican Vince Fong (who was already projected to advance). It's no surprise that no Democrats made the general election here, as this is the reddest seat in California. (It used to be represented by Kevin McCarthy.)

Similarly, in California's 31st District, ABC News reports that Republican Daniel Martinez will advance to the general election, joining Democrat Gil Cisneros (who was already projected to advance). That's good news for Cisneros; since this is a solidly blue seat, he will have no trouble in the general election against Martinez, whereas he would've faced a tougher campaign against a fellow Democrat.

—Nathaniel Rakich, 538


No runoff after all in North Carolina's 6th

Various news organizations (including ABC News) had projected that Republicans Addison McDowell and Mark Walker would advance to a runoff election in North Carolina's 6th District. However, that contest has now been called off. According to Spectrum News's Reuben Jones, Walker is taking a job with Trump's campaign and will not request a runoff after all. (In North Carolina, the second-place finisher has to request a runoff, it doesn't happen automatically.)

This maneuver is probably not a coincidence given that Trump endorsed McDowell in December. Regardless, it means that McDowell will be the GOP nominee here and very likely the district's next congressman, since Trump carried the 6th District by 16 points in 2020.

—Nathaniel Rakich, 538



Some projections in California

The general-election candidates are set in one of this fall's most competitive House races. ABC News reports that in California's 22nd District, Republican Rep. David Valadao and Democrat Rudy Salas are projected to advance to the general election, setting up a rematch of the 2022 race that Valadao won by just 3 points.

In addition, ABC News reports that Democrat Sam Liccardo and Democrat Gil Cisernos are projected to make the general election in California's 16th and 31st districts, respectively. Their general-election opponents, however, are still TBD.

—Nathaniel Rakich, 538


Dean Phillips suspends his campaign, endorses Biden

Minnesota Rep. Dean Phillips ended his campaign for president today and endorsed Biden's reelection campaign. Phillips got into the race last fall, citing Democratic worries about Biden's age and ability to beat Trump. But his campaign never took off, even in New Hampshire, where he focused much of his efforts because Biden wasn't on the ballot due to the state's primary having violated the national Democrats' new calendar rules. Phillips won 20 percent of the New Hampshire vote, but he didn't clear 10 percent in any other state where he got on the ballot. Yesterday, he earned 8 percent in his home state of Minnesota and 9 percent in Oklahoma, his best showings otherwise.

Although some Democrats share Phillips's concerns about Biden, Phillips predictably struggled because the incumbent president remains relatively well-liked by those in his party. Phillips was an unusual primary challenger in that he didn't have sizable ideological disagreements with Biden that stoked his run — the moderate congressman was not from the Bernie Sanders wing of the party, for instance. And Phillips's overall performance reflects the lack of appetite for a center-left alternative to Biden — who hails from that part of the party — or at least one who didn't already have a sizable standing. Rather, the intraparty dissatisfaction with Biden has been felt more on the left, which has been especially critical of Biden's handling of the Israel-Gaza situation. (See: the "Uncommitted" protest movement getting more votes than Phillips in his home state.) Tellingly, Marianne Williamson's minor left-wing campaign has actually won more votes than Phillips in 10 of the 15 primaries they both participated in.

—Geoffrey Skelley, 538