A head to head comparison of the South Carolina 2020 General Election gives us an idea of the break down of the voters.      

President Donald Trump received 1,385,090 (56%) votes beating VP Joseph Biden who gained 1,091,518 (44%) by 293,572 votes in South Carolina.

President Trump won 33 counties out of the 46 counties that make up South Carolina. The record shows that VP Biden won 13 counties.  

2020 SC Primary Election vs Presidential General Elections Counties Won              

Primary Elections

Presidential General Election

Primary Election

In the Primary, VP Biden won all the 46 counties that make up South Carolina.

2020 SC Presidential Primary vs Presidential General Elections w.r.t % Votes and Total Votes Won        

Presidential Primary Elections

Presidential Election

On a head to head count with the total votes between in VP Biden and President Trump between the Presidential Primary and General Elections, percentage (%) vote shift difference is a 56% increase for President Trump and a 27% decrease for VP Biden. These percentages are represented by a vote increment of 1,385,090 for Trump and 829,182 for Biden at the Presidential General Elections.

Presidential Primary Elections

Presidential General Elections

During the 2020 General elections, a lot of total number of votes were cast. Aside the Electoral Votes, Popular Votes came to the fore as well. Further details regarding overall total votes cast, percentage contributed by the various states, and the winner of Popular votes will be updated soon.

Top 15 Counties in Presidential Primary Elections vs Presidential General Elections

All Candidates (Presidential Primary Elections)

All Candidates (Presidential General Elections)

Primary Elections vs General Elections

These 15 counties play an important role in these primary elections. If a candidate, can get a sizable majority in the larger counties (Greenville, Charleston and Richland), it still possible for other candidates to catch up, given there are other counties of similar size.

Top 15 Counties Comparison in Primary Elections vs General Elections

Presidential Primary Elections
VP Joseph Biden

Presidential Primary Elections
President Donald Trump

Presidential General Elections
VP Joseph Biden

Presidential General Elections
President Donald Trump

Richland and Charleston, two of the larger counties in South Carolina, voted in favor of VP Joseph Biden giving him a 102k vote advantage out of those counties. However, President Trump's steady win at many of the other counties (including Greenville, a crucial one) was enough for him to catch up, making him gain an upper hand in the State of South Carolina.

Related References: 2020 South Carolina Primary Election Story, 2016 South Carolina Primary Election Story, 2012 South Carolina Primary Election Story