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2020 Super Tuesday live updates: Biden sweeps the South, wins most delegates

More than 1,300 delegates — or about a third of the total — were at play on Super Tuesday.
Image: Voters in 14 states will cast ballots in Democratic primaries on \"Super Tuesday,\" March 3, 2020.
Voters in 14 states cast ballots in Democratic primaries on "Super Tuesday," March 3, 2020.Chelsea Stahl / NBC News

Fourteen states and one territory held nominating contests for the Democratic Party's candidate for president on Tuesday, the most pivotal day on the presidential primary calendar.

When the polls closed on Super Tuesday and results came in, it became clear that former Vice President Joe Biden had swept the Southern states, winning the primaries in Virginia, North Carolina, Alabama, Tennessee, Oklahoma, Arkansas and Texas, as well as Minnesota and Massachusetts, and had ended the night with the most delegates. Sen. Bernie Sanders came out on top in Colorado, Utah and his home state of Vermont, NBC News projected.

On Wednesday, NBC News declared Biden the apparent winner in Maine, though the race against Sanders in the state was a tight one.

More than 1,300 delegates — about a third of the total — were at play, more than on any other day in the primary season.

Download the NBC News app for full coverage and alerts on the latest news.

Live Blog

Deadly Tennessee tornado alters polling locations for voters

The tornado that tore through central Tennessee early Tuesday morning and killed at least 19 people has prompted the state's Division of Elections to alter some polling times and locations for voters who want to cast ballots in today's primary. 

Nashville was among the hardest hit areas, and government officials announced that all polling locations in the region would open an hour late, at 8 a.m., but will still close at 7 p.m. The government also tweeted guidance redirecting voters to other polling locations if their original voting place was affected by the tornado. 

The website for Tennessee Secretary of State Tre Hargett said that the state's Division of Elections is open Tuesday and can be reached at 1-877-850-4959. The other divisions of Hargett's office are closed as a result of the tornado. 

Hargett tweeted Tuesday that he's working with election officials to ensure that polling locations in counties experiencing damage are open for the required 10 hours.

Can Latinos seal the deal for Sanders on Super Tuesday?

AUSTIN, Texas — As soon as California moved its primary to Super Tuesday, it was clear Latinos would be crucial in choosing the Democrats’ presidential nominee.

Bernie Sanders is heading into the 14-state primary contest on Tuesday having dominated the Latino vote in the first three states to vote, including Nevada, giving him the early lead in the delegate race.

Now there is potential for Latino voters in California and Texas, which rank first and second in the number of Latinos eligible to vote, to bolster and widen that lead.

“What we saw in Nevada, Bernie was the first candidate to be able to expand his coalition," said Oscar Ramirez, a Democratic strategist with Fulcrum Public Affairs. "He won the majority of Latino votes there. He was the first candidate to be able to grow beyond his base."

But Ramirez added that the Latino electorate varies by state, “and Nevada is very different from Texas.”

Read more here.

Sanders jokes he got 'at least two votes in Vermont'

Bernie Sanders and his wife Jane O'Meara Sanders vote in the Vermont primary at their polling place in Burlington, Vermont, on March 3, 2020.Jonathan Ernst / Reuters


Campaign's next phase: Go big to win, or hang on for dear life

WASHINGTON — The Democratic presidential primary is about to super-scale, moving from a series of single-state battles for momentum to a national multifront war for delegates, putting extra pressure on underdog campaigns that can't raise huge amounts of money or field large armies of supporters in dozens of places at once.

Half the states in the country will vote this month, making the person-to-person politics of the small early states no match for the more-is-more style of campaigning needed to win mega-states like California, Texas, Florida and Illinois, which all vote this month.

The scale of the coming contests is enormous. About 10 times as many delegates are at stake on Super Tuesday as were up for grabs in Iowa, New Hampshire, Nevada and South Carolina combined, and nearly three times as many people have already voted early in California alone as voted in all four early states.

"There are a bunch of candidates who need to ask themselves why they're in this race," said Lilly Adams, a former top aide to Sen. Kamala Harris' presidential campaign. "Are they in it today to be introduced as a presidential candidate at events, or are they in it to win? If they are the former, not the latter, then they should get out."

Read more here.

Everything you need to know about Super Tuesday

The Democratic presidential candidates are in crunch mode as they prepare for the most important day in the primary race so far: Super Tuesday.

More than a million voters across over a dozen states have already voted early or by mail-in ballot, but the rest will head to the polls Tuesday to make their choice.

Here’s what you need to know.