What if in 1968

[Lincoln Republican]

In 1968, Republicans and Democrats had strong Presidential nominees, former Vice President Richard Nixon and sitting Vice President Hubert Humphrey.

What if in 1968

Both Republicans and Democrats nominate weaker and not as high profile Presidential candidates.

Republicans nominate Governor James Rhodes of Ohio for President, Governor since 1963, and Governor John Volpe of Massashusetts for Vice President, Governor 1961-1963, and Governor again since 1965.  (Rhodes and Volpe did actually seek the Presidential nomination in 1968)

Democrats nominate Senator Stephen Young of Ohio for President, Senator since 1958, and Senator Ralph Yarborough of Texas for Vice President, Senator since 1957.  (Young did actually seek the Presidential nomination in 1968)

American Independent party candidate is former Alabama Governor George Wallace.  Wallace persuades prominent Arkansas Senator J. William Fulbright to be his Vice Presidential running mate.  Fulbright had been in the U.S. Senate since 1945, and had been Chairman of the Senate Committee on Foreign Relations since 1959.  Fulbright runs for both Vice President on the American Independent Party ticket, and for U.S. Senator from Arkansas on the Democratic ticket.

The point being in this scenario is how much better does Wallace do given the weaker major party tickets, combined with Wallace's more prominent and more credible Vice Presidential nominee?

Please discuss.  Use maps if you wish.

[Lincoln Republican]

Rhodes/Volpe                     234
Young/Yarborough             227
Wallace/Fulbright                 77

[Kaine for Senate '18]

Rhodes wins 240-221-77, but Young wins in the HoR:

[Sic Semper Fascistis]

Let's assume the impossible : Wallace getting something like 25% of the votes, becoming the best third-party candidate since Roosevelt. He would carry about every state of the South.
Without Nixon Republicans lose California, but the presence of a New Englander on the Republican ticket manage to give it the state of Connecticut. At the same time, Yarbourough brings Missouri to democrats.

Young : 231
Rhodes : 204
Wallace : 103

Nobody would get an electoral majority and the democratic House would elect Young.