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.

Last Updated: March 5, 2024, 8:15 PM EST

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.

Latest headlines:

Here's how the news is developing.
Mar 05, 2024, 8:15 PM EST

Republican leaders really wanted Buckhout

The Congressional Leadership Fund, which is aligned with the Republican House leadership, has spent several hundred thousand dollars to prevent Sandy Smith from winning that primary again. CLF also spent (unsuccessfully) against Smith in the 2022 primary after several damaging stories about her came out.

—Jacob Rubashkin, Inside Elections

Mar 05, 2024, 8:12 PM EST

Buckhout is very wealthy …

Not only did she drop more than $1 million of her own money into her campaign, she lives in a fancy, columned, waterfront manor in ritzy Edenton, with its own boat dock and putting green!

—Kaleigh Rogers, 538

Mar 05, 2024, 8:10 PM EST

In North Carolina's 1st District, Republicans may nominate a woman

Most of the Republicans that emerge from the GOP primaries in North Carolina today will be men. But in the 1st District, Democratic Rep. Don Davis awaits today's outcome, which will determine if he'll face Republican MAGA-firebrand, Sandy Smith (again), or wealthy businesswoman, Laurie Buckhout. As we wrote earlier, the 1st District will likely be the state's sole competitive House race in November.

—Meredith Conroy, 538 contributor

Mar 05, 2024, 8:09 PM EST

Trump is winning where he and Cruz won in 2016

In the first 19 towns in Vermont with reasonably complete results, Trump's support this year correlates at around 0.60 with his support back in 2016, which is a pretty high correlation and similar to what we saw in New Hampshire. But as we've observed in other states, Trump is also doing well in the Vermont towns where Ted Cruz had more support in 2016. Since 2016, Trump has consolidated the GOP's right-leaning voters.

—Dan Hopkins, 538 contributor