I just don't see even Rocekfeller getting it that close...here is what I think the most plausible Scenario's...I also think with two liberals on the ticket, that LBJ might get his feet cut away from him, If a staunch segregationist of the likes of Orval Fabus of Arkansas decided to take the dixiecrats away...He could in this scenario
1. Most likely scenario
Lyndon B. Johnson/Hubert H. Humphrey: 312 Electoral VotesNelson A. Rockefeller/Thruston Morton: 116 Electoral VotesOrval Fabus/Robert Byrd: 110 Electoral Votes2. Best Case Scenario for Rocky... He fails to reach the necessary 269 electoral votes, throwing the election there, where LBJ wins.
Nelson A. Rockefeller/Thruston Morton: 264 Electoral VotesLyndon B. Johnson/Hubert H. Humprhey: 221 Electoral VotesOrval Fabus/Robert Byrd: 53 Electoral Votes3. Worst Case Scenario for Rocky...
Lyndon B. Johnson/Hubert H. Humphrey: 501 Electoral VotesNelson A. Rockefeller: 20 Electoral VotesOrval Fabus/Robert Byrd: 17 Electoral Votes