ORLANDO, Fla. — As Gov. Ron DeSantis plummets in the GOP presidential primary polls, his status as option number two in case anything happens to Donald Trump is getting more precarious. He’s battling native son and daughter Tim Scott and Nikki Haley in South Carolina. He’s neck and neck in some polls with businessman Vivek Ramaswamy and could become the target of everyone who doesn’t want to attack Trump directly. His campaign is laying off staff to try to cut spending as contributions dry up and mired in a debate about whether slaves developed beneficial skills for later in life. It’s also un...