COLUMBIA, S.C. — Gov. Henry McMaster, a former state GOP party chairman, said he sees no need to close the primaries despite calls to do so from within the state Republican Party. Ahead of Saturday’s first-in-the-South Republican presidential primary, outside groups have tried to push Democratic and independent voters who didn’t vote in the Feb. 3 presidential primary to participate in the GOP presidential primary. The groups want non-Republican voters to support former Gov. Nikki Haley over former President Donald Trump, who leads in the polls ahead of the primary. The state GOP platform call…