COLUMBIA, S.C. (WIAT) — The Republican candidates are stomping for votes and picking up key endorsements in South Carolina.

Marco Rubio scored big when Governor Nikki Haley threw her support behind him.

Jeb Bush is hoping his name and his famous father and brother will give his campaign a boost.

The CBS42 Morning News spoke with Charles Bierbauer, former CNN Political Analyst, about the importance of endorsements.

In these final hours, the Republican candidates are swinging with everything that they have.