Discuss as:

Voters head to the polls in the South Carolina primary

John Moore / Getty Images

Republican primary voters sign in before casting ballots on Jan. 21 in Charleston, South Carolina. Voters decided between four major candidates in the key conservative state.

South Carolina voters head to the polls as presidential candidates Newt Gingrich and Mitt Romney fight for every last vote in this very hot race.

Related Links:

John W. Adkisson / Getty Images

Republican presidential candidate, former Speaker of the House of Representatives Newt Gingrich speaks during a live television interview during a campaign stop at the Grapevine Restaurant on Jan. 21, in Spartanburg, South Carolina.

Charles Dharapak / AP

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, calls eligible voters at his campaign headquarters in Greenville on Jan. 21, the day of the South Carolina Republican presidential primary.

John Moore / Getty Images

Signs adorn the doorway to a polling place for the Republican primary election on Jan. 21, in Charleston, South Carolina. Voters decided between four major candidates in the key conservative state.