Ginsburg is just the start. Look @ the ages of the SCOTUS. If POTUS gets a 2nd term, it's extremely likely he gets at least one more. That'll give him 4/9.
If R's retake the House and keep the Senate, that is game fucking over. Frankly, their five alarm fire freak out is absolutely warranted. lol
Thomas (R HW) - 72, Breyer (D Clinton) - 82, Roberts (R, sorta, W) - 65, Alito (R. W) - 70, Sotomayor (D Obama) 66
Kagan (D O) 60, Gorsuch (R Trump) 53, Kavanaugh (R Trump) 55