Haley fails to block Trump at home, wins South Carolina Republican primary. South Carolina is the first southern state to hold a primary election in the U.S.
election cycle. Since 1980, Republican candidates who have won the South Carolina primary have ultimately become the party's presidential candidate. After the primaries of the two parties in South Carolina, the US general election primary calendar will usher in "Super Tuesday" on March 5. By then, 15 states will hold Republican primaries simultaneously. (over)