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

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 Mr. Sanders. And sure enough, he holds a commanding lead in most California polls, including a CNN poll published on Friday that put him more than 20 points ahead of his closest rival.

If those numbers hold, all of his opponents will be at risk of falling short of the 15 percent threshold needed to claim any statewide delegates, though they could still win delegates in congressional districts.

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

Texas: 228 pledged delegates

With Super Tuesday just three days after the South Carolina primary, there simply isn’t much polling available to tell us how much wind that victory has put in Mr. Biden’s sails.

Texas is Exhibit A for all that uncertainty. Mr. Biden and Mr. Sanders had been running neck-and-neck there since January, but recent polls have shown Mr. Sanders pulling ahead. His well-funded campaign has invested heavily in the Lone Star State, seeking in particular to drive turnout among its large Latino population, which made up roughly one-third of the Texas Democratic primary vote in 2016, according to exit polls.

An NBC News/Marist College poll released Sunday showed him leading Mr. Biden by 15 points, with Mr. Bloomberg in third place.