The S.C. Republican Party’s sponsorship of “An Evening Honoring Rudy Giuliani” last week spoke volumes. It reflected what some said is a shift in attitude toward GOP candidates with more liberal views on social issues. There’s a greater degree of tolerance and acceptance, party officials said. Giuliani, who rose to national prominence for his take-charge performance after the Sept. 11 terrorist attacks, supports gay rights, gun control and legalized abortion, which puts him at odds with most Republicans. Nevertheless, he has traveled the country extensively on behalf of GOP candidates this year while acknowledging his own interest in a possible...