Gerald Ford in 1980 would have handily defeated Carter, who only does slightly better in the South than he did against Reagan. I think Ford would have picked a more conservative running mate. John Tower seems like a good choice: He was more conservative, but supported Ford in 1976 primary. He's also from a southern state, helping to win Texas.
✓ Former President Gerald R. Ford (R-CA)/Senator John Tower (R-TX): 450 EV. (54.73%)President James E. Carter (D-GA)/Vice President Walter F. Mondale (D-MN): 88 EV. (43.91%)