Twice as many Republicans voted in the Republican Primary as did Democrats in the Democratic Primary. Trump, Rubio and Cruz each received more votes than Bernie.
Half of the Republicans received 570,000 but half of the Democrats only received 367,000 because twice as many people turned out for the Republicans in South Carolina. Half as many Democrats showed up to vote as did Republicans. Hillary received 271,000 out of only 369,000 Democrats who voted.
South Carolina is Republican State so the General Election should keep Republicans in power. Trump will win South Carolina in the fall election