Following the first GOP presidential primary debate on Aug. 23, among possible GOP voters who watched the Fox News broadcast, former South Carolina Gov. and U.S. Ambassador to the U.N. Nikki Haley, entrepreneur Vivek Ramaswamy, and Gov. Ron DeSantis (R-Fla.) gained support, while former President Donald Trump lost support.
Ms. Haley received the biggest bump, a 17-point increase, from 29 percent support before the debate to 46 percent, according to a poll done by FiveThirtyEight/Washington Post/Ipsos promptly after the two-hour debate, which was moderated by Fox News anchors Bret Baier and Martha MacCallum.