The Democratic presidential contenders are poised to face off on Tuesday in one of the most consequential contests of the primary race so far, with 14 states set to vote and 1,300 delegates up for grabs.

Sen. Bernie Sanders (I-Vt.) heads into the contests as the front-runner after wins in New Hampshire and Nevada, as well as a virtual tie in Iowa, but former Vice President Joe Biden got a major boost after decisively winning South Carolina.

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Super Tuesday will also mark the debut of former New York City Mayor Michael Bloomberg on the ballot. He will join a race that has significantly winnowed over the past three days with Sen. Amy Klobuchar (D-Minn.), former South Bend, Ind., Mayor Pete Buttigieg, and billionaire Tom Steyer all dropping out.

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