South Carolina GOP Senate primary runoff comes to a head

Republican voters in South Carolina are at the polls on Tuesday for the Senate primary runoff between Trump-backed Sen. Darline Graham and Rep. Ralph Norman. CBS News senior White House and political correspondent Ed O'Keefe reports.

Republican voters in South Carolina are at the polls on Tuesday for the Senate primary runoff between Trump-backed Sen. Darline Graham and Rep. Ralph Norman. CBS News senior White House and political correspondent Ed O'Keefe reports.