Longtime Republican strategist Karl Rove has a dark warning for the Republican Party: former President Donald Trump isn’t getting the unity he needs to win. Rove made the claim on Fox News Tuesday, as primary results came in on Super Tuesday, according to an NBC News report. “There’s still some work to be done to unify the Republican Party,” Rove reportedly said. “That’s going to depend a lot on his tone tonight and whether or not he stops doing things like calling her birdbrained and threatening that if you give money to her campaign you’re going to be permanently banned.” Rove also noted tha…