Florida Senator Rick Scott, the new chair of the National Republican Senatorial Committee, said on Thursday that he'd support incumbent Senators if they face primaries, and that's the case even if fellow Florida Senator Marco Rubio were to face a primary challenge from Ivanka Trump. There have been rumors that former President Trump's daughter might challenge Rubio in his bid for reelection in 2022. Mr. Trump has also said that he wants to to see South Dakota Senator John Thune, the number two Republican in the Senate, challenged in a primary. "I'm supporting incumbents," Scott told reports when pressed on...