This one is a real wildcard to predict. If Romney is the nominee, I'm assuming he has managed to avoid his "brainwash" comment, though he is still very critical of the war, and his handling of the Detroit riots is largely considered a success. His campaign calls for national healing and picks up a larger share of support than usual for a Republican from young, urban and minority populations. On the other hand he is seen by many in his own party as too eager to surrender in Vietnam. Romney's religion is a hindrance in some areas, and he runs into some conflict with his own church over race issues though he retains the support of a majority of his fellow Mormons. Quite a few Americans are reluctant to vote for a black for VP, though many of those are willing to stomach this given dissatisfaction with the Democrats. In the end, Humphrey is able to win the most support by a wide margin, though Romney is given credit for pulling Humphrey to break somewhat from LBJ on Vietnam in order to hold on to his liberal supporters.
VP Herbert Humphrey (MN) / Sen. Edmund Muskie (ME) 46% 374Gov. George Romney (MI) / Sen. Edward Brooke (MA) 37% 87Fmr. Gov. Geroge Wallace (AL) / Gen. Curtis LeMay (CA) 17% 77