[1] South Carolina voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican nominee, incumbent President Donald J. Trump, and running mate Vice President Michael R. Pence against Democratic nominee, former Vice President Joe Biden, and his running mate California Senator Kamala Harris.

On September 7, 2019, the South Carolina Republican Party became one of several state GOP affiliates to cancel their respective primaries and caucuses officially.

[4] Donald J. Trump's re-election campaign and Republican officials have cited the fact that Republicans canceled several state primaries when George H. W. Bush and George W. Bush sought second terms in 1992 and 2004, respectively, and Democrats scrapped some of their primaries when Bill Clinton and Barack Obama were seeking re-election in 1996 and 2012, respectively.

On December 11, 2019, a state court judge dismissed the lawsuit, writing in his opinion that the law "does not give plaintiffs a legal right to presidential preference primary".

Official results show that Joe Biden won the Democratic primary with 48.65% of the vote, with Bernie Sanders coming in second with 19.77%.

South Carolina—a Deep Southern Bible Belt state that was once part of the Democratic Solid South—has had a Republican tendency since 1964.