What you need to know about the South Carolina Democratic primary

On February 29, South Carolina Democrats and voters nationwide will have their first opportunity to see how candidates perform in a state whose Democratic electorate is expected to be mostly African-American. Sixty percent of the turnout here is expected to comprise black voters.

Two months into 2020, after three states have weighed in, Iowa, New Hampshire and Nevada, Bernie Sanders has emerged as the front-runner, winning both Nevada and New Hampshire, and garnering the greatest number of votes in Iowa (though he came in slightly behind Pete Buttigieg in delegates)....