That’s right, subject to the constitutional requirements quoted below. The electoral COLLEGE may change, but the electoral SYSTEM may not change short of a constitutional amendment. The Constitution requires each state to appoint the number of electors “equal to the whole Number of Senators and Representatives to which the State may be entitled in the Congress” and “no Senator or Representative, or Person holding an Office of Trust or Profit under the United States, shall be appointed an Elector” (Art II, Sec 1, Cl 2).
How do those rules apply to the fact that Bill Clinton is an elector in NY? Isn’t that sort of a conflict of interest...or would be if NY weren’t chock full of libtards?