The South Carolina senator unexpectedly died on Saturday evening after suffering from an aortic dissection, according to officials.

U.S. Senator Lindsey Graham died Saturday after a brief and unexpected illness, his office said in statement posted on social media.

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.

Gov. Henry McMaster (R-SC) has the sole authority to appoint Graham's replacement, per South Carolina law.

Darline Graham Nordone has no government experience.