So if every state in the nation used the district system of EV allocation ala Maine and Nebraska the Electoral vote count would've been....
1968
Humphrey 189
Nixon 293
Wallace 56
1972
McGovern 64
Nixon 474
1976
Carter 269
Ford 269
1980
Carter 144
Reagan 394
1984
Mondale 71
Reagan 467
1988
Dukakis 158
Bush 380
1992
Clinton 324
Bush 214
1996
Clinton 344
Dole 194
2000
Gore 250
Bush 288
2004
Kerry 221
Bush 317
2008
Obama 301
Mccain 237
Clearly the district system would be beneficial for Republicans overall. 1976 would've been a mess as almost certainly many close districts would've had recounts....if the tie still stood, presumably Carter would've been elected by the House given its large Democratic majority, and especially considering that he won the popular vote.