Not doing any President before the 20th Century
T. Roosevelt: Democratic
Taft: Republican
Wilson: Democratic
Harding: Republican
Coolidge: Republican
Hoover: Republican
FDR: Democratic
Truman: Democratic
Eisenhower: Democratic or Independent
JFK: Democratic
LBJ: Democratic
Nixon: Democratic
Ford: Democratic
After Carter would be the same
Um... what? Nixon almost certainly would not be a Democrat.
If he had the political views he had in the 1970s, he'd be some sort of an authoritarian Lieberman-esque Democrat. Of course were Nixon alive to-day he might "adjust" some of his views as is the case in TNF's model.