Louisiana Governor Huey Long narrowly escapes assination at the hands of Carl Wiess and survives to run for POTUS in 1936.
Let's just say it's dicovered by the public that FDR is crippled and this leads to a scandal resulting in the unseating of Roosevelt for the Democratic nomination in favor of Long.
Assuming Long was victorious in the General election: How do you think he would've governed as POTUS, would he enter the war early, become dictator, or be named as on of our greatest Presidents?