Former vice president Joe Biden won the South Carolina primary Saturday.

He was boosted by heavy support among black voters, and those over 45-years-old. In South Carolina, those groups made up a larger share of voters than in earlier Democratic contests. Biden also had the highest favorability ratings of all the candidates, according to early exit polls.

After finishing in third place in South Carolina, investor Tom Steyer dropped out of the race.

Tonight’s result is the first real test of whether candidates can appeal to black voters, a core part of the Democratic electorate. African Americans make up about 50 percent of the South Carolina primary voters.

Even as the votes were still being counted, many candidates had pivoted to Super Tuesday states. Sen. Elizabeth Warren (Mass.) popped over to Little Rock. Sen. Bernie Sanders (I-Vt.) spent Saturday in Warren’s home state of Massachusetts.

Others on the Democratic ballot Saturday include former South Bend, Ind., mayor Pete Buttigieg, Sen. Amy Klobuchar (Minn.) and Rep. Tulsi Gabbard (Hawaii). Former New York mayor Mike Bloomberg is also seeking the Democratic nomination but is not competing in South Carolina.