Pitney, John J., Jr. "What If There Were Three Major Parties?"
Divergence: 1933 CE
What if: Franklin Roosevelt was killed in 1933, and when Jack Garner instituted no New Deal, Huey Long ran for president in 1936 as a Populist.
Comments: The many ways in which presidential elections could get hung up in the Electoral College or Congress if there were three equi-strength parties.
Published: In What If the American Political System Were Different? (ed. Herbert M. Levine), q.v.