Biden dominates, Sanders slips to second and other takeaways from the South Carolina primary

Former Vice President Joe Biden finally got the win he needed.

After nearly a month of underperforming in Iowa and New Hampshire, and finishing in a distant second in Nevada, Biden sealed a definitive win in the South Carolina primary, with black voters pushing him to victory. It's the first primary win ever for Biden, who is running for president for the third time.

According to exit polls, 64% of black voters supported Biden. Sen. Bernie Sanders came in a distant second with black voters at 15%, followed closely by billionaire activist Tom Steyer at 13%.

Here are some takeaways from the South Carolina Democratic primary:

Joe Biden's big win
South Carolina voters also turned to a key endorsement to make their decision. According to exit polls, six out of 10 primary voters took into account Rep. Jim Clyburn's endorsement of Biden. Clyburn is a Democratic icon in South Carolina, and told CNN on Friday “we will have to sit down and get serious about how we retool this campaign” following Saturday's primary.