Black voters propel Biden to big wins in Virginia, NC, Alabama

Former Vice President Joe BidenJoe BidenThe Hill's Morning Report - Presented by Facebook - Americans debate life under COVID-19 risks Biden set to make risky economic argument against Trump Hillicon Valley: Tech companies lead way on WFH forever | States and counties plead for cybersecurity assistance | Trump weighing anti-conservative bias panel MORE is off to a strong Super Tuesday start after he was declared the winner of the Virginia, North Carolina and Alabama primaries by networks immediately as polls closed in both states.

Exit polls suggested Biden was bolstered by heavy support from African American voters, a development that had previously boosted him in South Carolina and portends well for his chances in other Southern states holding primaries Tuesday.

Polls had shown a tight race between Biden and Sen. Bernie SandersBernie SandersHillicon Valley: Tech companies lead way on WFH forever | States and counties plead for cybersecurity assistance | Trump weighing anti-conservative bias panel Biden wins Hawaii primary Warren to host high-dollar fundraiser for Biden MORE (I-Vt.) in Virginia and North Carolina as recently as last week.

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But Biden’s big victory in South Carolina gave him a burst of momentum that could help blunt the advantage Sanders likely will have when polls close in California later tonight.

Biden was boosted by a string of endorsements from high-profile Virginians, including Sen. Tim KaineTimothy (Tim) Michael KaineBipartisan senators introduce bill to make changes to the Paycheck Protection Program Overnight Defense: National Guard chief negative in third coronavirus test | Pentagon IG probing Navy's coronavirus response | Democrats blast use of Russia deterrence funds on border wall Overnight Defense: Navy secretary nominee: Service in 'rough waters' after 'failure of leadership'| Senate fails to override Trump's Iran war powers veto| Top Armed Services Republican expects to address Pentagon border wall funds in defense policy bill MORE (D), former Gov. Terry McAuliffe (D), and Democratic Reps. Bobby ScottRobert (Bobby) Cortez ScottUnions worry Congress is one step closer to a liability shield Victim advocacy groups, Democratic lawmakers slam new campus sexual assault policies Abortion battle threatens to upend health insurance push MORE, Jennifer WextonJennifer Lynn WextonDemocratic lawmaker calls for Peace Corps, Americorps volunteers to be eligible for unemployment benefits Black voters propel Biden to big wins in Virginia, NC, Alabama Biden notches major win in Virginia primary MORE and Don Beyer. 

And he’s benefiting from strong support among African Americans, taking more than 70 percent support among black voters in Alabama. Alabama is more than 40 percent black and has the largest population of black voters out of all the Super Tuesday states.

Exit polls in Virginia showed Biden taking about 66 percent support among black voters there as well.

The Democratic electorates in Virginia and North Carolina, as well as states across the Deep South, are more than a quarter black, according to exit polls.

In 2016, Sanders failed to win any state that had a black population of more than 21 percent, and that dynamic appears to be hampering him on Super Tuesday.

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Sanders, however, has strong support from Latinos, who helped him to a big victory in the Nevada caucuses. That could come into play later tonight in California and Texas, the two largest delegate hauls of the primary season.

Biden’s victories in Virginia and North Carolina are also harmful to former New York City Mayor Michael BloombergMichael BloombergIt's as if a Trump operative infiltrated the Democratic primary process Liberals embrace super PACs they once shunned .7 billion expected to be spent in 2020 campaign despite coronavirus: report MORE, who launched his campaign after becoming worried that Biden looked like a weak front-runner.

Bloomberg invested and campaigned heavily in Virginia, visiting it more than any other Super Tuesday state. He spent more than $12 million in North Carolina.

Now Biden stands to win at least a plurality of North Carolina’s 110 delegates and Virginia’s 99. 

Sanders, meanwhile, easily won the primary in his home state of Vermont, where 16 delegates were up for grabs.

Polls are still open in California, where 415 delegates are at stake, and Texas, which accounts for 228 delegates. 

Sanders will be looking to run up the score in California, the largest delegate prize on the map.

All told, about 1,300 delegates will be awarded Tuesday, accounting for about one-third of all pledged delegates up for grabs. 

A candidate must win 1,991 delegates to clinch the Democratic presidential nomination.

Updated at 8:07 p.m.