Former Vice President Joe Biden gestures as he speaks during a campaign rally in Detroit on March 9. Photo: Mandel Ngan/AFP via Getty Images

Joe Biden is the projected winner in the Michigan, Mississippi, and Missouri presidential primaries, per AP. The news agency also projected early Wednesday that he won Idaho.

The big picture: Democratic voters in six states are choosing between Bernie Sanders' revolution or Joe Biden's so-called Return to Normal campaign, as the candidates compete for the party's presidential nomination and the chance to take on President Trump.

What Biden's saying: "It's a comeback for the soul of this nation," he said in Philadelphia, after his projected winning streak through the first three primaries on Tuesday.

  • "And I want to thank Bernie Sanders and their supporters for their tireless energy and their passion ... and together, we’ll defeat Donald Trump."

By the numbers: Biden led Sanders by 96 delegates going into Tuesday night. The states will proportion their delegates based on Tuesday's results.

  • Michigan has 125 delegates.
  • Mississippi has 36 delegates.
  • Missouri has 68 delegates.
  • Idaho has 20 delegates.
  • North Dakota has 14 delegates.
  • Washington has 89 delegates.

Of note: Following his Super Tuesday delegate haul and South Carolina victory, Biden's campaign has outspent Sanders on TV ads in Mississippi, Michigan, and Missouri, Politico reports, citing data from Advertising Analytics.

  • But, Sanders "remains the only spender" in North Dakota, Idaho and Washington state, per Politico.

Flashback: Biden, after protesters with two banners, one which read "NAFTA killed jobs," interrupted his event in Detroit on Monday:

"I'm not worried about it. It's just a reflection of what's wrong with American politics today. ... This is one of the things that Donald Trump has generated. This is not who were are. This is not who we are as a party, this is not who we are as a people."

Sanders, making one of his last pitches in St. Louis on Monday:

"Think about the insanity of a system, where today somebody wakes up and maybe they think they have the symptoms of coronavirus. Yet they cannot afford to go to a doctor ... so they're going to go to work and make a serious epidemic even worse."

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