I want to know if it would be possible for America to experience electoral reform sometime in the 20th century. Specific reforms would include:
~Drafting an amendment that dissolves the electoral college.
~Switching Senate elections to two-member STV districts.
~Switching House elections to either instant runoff voting, two-round voting, or STV.
Now, I recognize this is far-fetched, but, supposing it were to happen, when could it best be shoehorned in?