Political action committees and advocacy groups supporting Nikki Haley’s presidential bid spent millions in her home state of South Carolina, only for Haley to lose by 20 points in the state’s Saturday primary. Groups including the pro-Haley SFA Fund, the Koch-backed Americans for Prosperity Action and the liberal dark money-funded Defending Democracy Together collectively pumped over $8 million into supporting Haley in South Carolina between March 2023 and the February primary, according to Federal Election Commission (FEC) data. Meanwhile, Donald Trump’s backers only spent roughly $370,000 b…