Trump easily beats Nikki Haley in the South Carolina primary, but many Haley voters say they won't vote for him in November. Will they change their minds in a race against Joe Biden? 0:00 Donald Trump Takes South Carolina but His Weaknesses Show 7:06 Donald Trump is Now the Establishment Images: AP/AFP/Getty Images Composite: Mark Kelly Read ‘Potomac Watch’ column: https://www.wsj.com/news/author/kimberley-a-strassel Follow ‘Potomac Watch’ on Twitter: https://twitter.com/KimStrassel Subscribe to WSJ Opinion: https://bit.ly/3PovNsz More from WSJ Opinion: On site: https://www.wsj.com/news/opinion On Twitter: https://twitter.com/WSJopinion On Facebook: https://www.facebook.com/WSJOpinion #WSJOpinion #WSJ #PotomacWatch