Trump nabs crucial primary wins in South Carolina, Oklahoma: 4 takeaways

President Trump notched two critical wins in South Carolina and Oklahoma on Tuesday, with Sen. Darline Graham (S.C.) and former state Rep. Mike Mazzei (Okla.) clinching the GOP nominations in their respective primary runoff races. The Republican contests served as another key test of the president’s influence in the GOP as several of his gubernatorial and House picks have fallen short in their primaries this cycle.   Darline Graham…