Just a quick What-if I created

[True Democrat]

It starts in 1960 (and this isn't supposed to be that plausible, just fun):

1960:

Nixon/Scranton: 53%, 355 electoral votes
Smathers/Kennedy: 46%, 182 electoral votes

1964:

Nixon/Scranton: 56%, 348 electoral votes
Johnson/(Pat)Brown: 44%, 190 electoral votes

1968:

Scranton/Baker: 51%, 290 electoral votes
Brown/RFK: 49%, 248 electoral votes

1972:

Scranton/Baker: 60%, 404 electoral votes
Wallace/Udall: 38%, 134 electoral votes

1976:

Baker/(William)Cahill: 52%, 338 electoral votes
Carter/(Stuart Lee)Udall: 47%, 200 electoral votes

1980:

(Mo)Udall/(Arthur)Link: 49%, 281 electoral votes
Baker/(William)Cahill: 49%, 257 electoral votes

1984:

(Mo)Udall/(Arthur)Link: 58%, 385 electoral votes
Scranton/Weicker: 42%, 153 electoral votes

1988:

Scranton/Simpson: 54%, 307 electoral votes
Gore/Hart: 45%, 231 electoral votes

1992:

Scranton/Simpson: 59%, 404 electoral votes
Clinton/Hollings: 41%, 134 electoral votes

More to come later.