The sudden death of Sen. Lindsey Graham (R-S.C.) at age 71 has created an unexpected Senate vacancy but will not immediately change the balance of power in the upper chamber. South Carolina Gov. Henry McMaster (R)

The South Carolina Republican's replacement will be appointed by Gov. Henry McMaster, who has sole authority over the matter.

Who could replace Lindsey Graham? Here's how South Carolina will choose a temporary senator, hold a GOP primary, and pick a candidate for November.

The congresswoman will need to make a decision quickly, as South Carolina law states that a special election must be held Aug. 11.