With three nominating contests down, 101 pledged delegates have been divided among the Democratic presidential candidates. On Saturday, 54 more will be up for grabs in South Carolina’s primary.

But three days later, the stakes get a lot higher. More than 1,300 delegates — about one-third of the available total — will be in play on Super Tuesday next week, when 15 states and territories and Democrats abroad vote.

That’s probably the biggest reason the outcome in South Carolina matters so much: Who succeeds there could have a big influence on what happens three days later. If former Vice President Joe Biden wins in South Carolina, where polls show him leading, he could ride that momentum into the most delegate-rich voting day on the calendar.

If he does not win South Carolina, the weakness of his ground operation in most Super Tuesday states and the strength of his competition would put Biden at a disadvantage. Sen. Bernie Sanders, the current front-runner, is well positioned in many of the Super Tuesday states; a few decisive victories in the biggest contests could make his path to the nomination much clearer. Then there’s former Mayor Michael Bloomberg of New York, who has spent more than $500 million on advertising and will be on the ballot for the first time on Tuesday after sitting out all four of February’s Democratic contests.

Sens. Elizabeth Warren of Massachusetts and Amy Klobuchar of Minnesota also see some bright opportunities, particularly in their home states, which both vote Tuesday. (So does Vermont, Sanders’ home.) And former Mayor Pete Buttigieg of South Bend, Indiana, may also be able to score a meaningful number of delegates, although no particular state appears easily winnable for him.

Here is a look at what polls are telling us about the six states with the most delegates on the Super Tuesday map.

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California: 415 Pledged Delegates

The big prize. California moved its primary up to Super Tuesday for 2020, and its enormous delegate haul makes this newcomer the instant star. With its relatively liberal, heavily Latino Democratic electorate, it is well suited to Sanders. And sure enough, after his big victory in neighboring Nevada, he holds a commanding lead in most California polls, including a CNN poll published Friday — such that all of his opponents are at risk of falling short of the 15% threshold needed to claim any statewide delegates. (They could still win delegates in congressional districts.)

In many polls, Warren is in contention for second place. As long as she hits the threshold, she could pick up a sizable chunk of delegates without winning the state. And Biden and Bloomberg are each within striking distance.

Texas: 228 Pledged Delegates

Texas is Exhibit A for why the South Carolina primary matters. Biden and Sanders are neck-and-neck in most polls, with both candidates relying on a diverse but fragile coalition. The results from South Carolina, expected to be the year’s first nominating contest with a majority-black electorate, have the potential to help tip the scales in Biden’s favor.

Sanders has invested heavily in Texas, particularly seeking to drive turnout among the state’s large Latino population, which made up roughly one-third of the Democratic primary vote in 2016. He has a formidable opponent on the left in Warren, who grew up in neighboring Oklahoma and landed at 15% in a CNN poll of Texas released Friday. (Sanders led that poll with 29%, Biden had 20%, and Bloomberg had 18%.)

Bloomberg’s money is also a factor. He has flooded the airwaves in Texas, placing 80% of all political ads in the state, according to an analysis by The Dallas Morning News.

North Carolina: 110 Pledged Delegates

Next door to Biden’s self-described South Carolina firewall, North Carolina long seemed like an almost equally safe state for him. But early this year, as Bloomberg’s campaign accelerated and Sanders consolidated his support among liberal voters (a more plentiful group here than in South Carolina), Biden dropped in the polls.

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All three of those candidates stand a good chance Tuesday. A recent University of Massachusetts Lowell poll conducted by YouGov showed Sanders edging ahead with 23% support, Bloomberg at 19% and Biden at 16%.

Virginia: 99 Pledged Delegates

Along with North Carolina, Virginia probably offers Bloomberg his best shot at a significant victory. A Monmouth University poll earlier this month showed Sanders and Bloomberg tied at 22%, with Biden at 18% — technically a three-way statistical tie.

In that poll, Biden maintained a 2-to-1 lead over both Bloomberg and Sanders among black voters, but he significantly trailed both among voters making less than $100,000 a year, a demographic that has been crucial for both him and Sanders.

Massachusetts: 91 Pledged Delegates

In Warren’s home state, Sanders could play spoiler. The two liberal senators have been running about neck-and-neck, according to most recent polls — though a WBUR poll released Friday showed Sanders jumping out to an 8-point lead.

Biden remains in the running, sustained by his lead among nonwhite voters, and Buttigieg is also polling consistently in the midteens.

Warren received momentum from The Boston Globe on Wednesday, when the newspaper endorsed her, and the following day a super PAC announced that it would run $9 million of ads on her behalf through Super Tuesday. She affirmed this week that she planned to stay in the race if Sanders fell short of a delegate majority, and she has shown a sustained ability to fundraise that could keep her in the running through the summer. So, in the event of a contested convention, she may seek to present herself as a consensus choice.

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By that logic, a victory Tuesday in at least one state could be crucial to establishing Warren’s credibility as a candidate who can win.

Minnesota: 75 Pledged Delegates

It’s a similar story in Minnesota, where Klobuchar was out front in her home state with 29% of the vote in a Star Tribune/MPR News poll. But Sanders, who enjoyed one of his most resounding victories of the 2016 primary campaign there, ran a strong second at 23%.

Klobuchar may be banking on a similar argument to Warren’s should she make it to the convention. In a reflection of Klobuchar’s popularity among more middle-of-the-road Minnesota Democrats, none of her moderate rivals — Bloomberg, Biden or Buttigieg — scored higher than 8% in the Tribune/MPR poll. Warren came in at 11%.