Basically , the SC is already now in more or less equal powers or even more to Trumps favor . With RBG temporary gone and for sure NOT returning , Demoncrats have lost the majority of their SC leverage . Once Trump's pick is put on RBG's place , they will have majority turned against them . And then , picking off the other candidates ( Sotomayor , Kagan for sure , very possibly Breyer that has also been installed during Bush era . I think Alito will stay , or at least temporarily stay )