Who does Johnson run with, out of curiousity?
Honestly, I cannot remember now! Maybe Seymour?
In any case, here are two follow ups. Vice-President Conkling wins an even more impressive electoral college victory in 1872 than even Lincoln had in 1868, but the margins in practically every single state were considerably closer. Much of his widespread victory can, in part, be attributed to the Democratic split between whether to endorse the Liberal Republican ticket or the "traditional" Democratic ticket.
Conkling's victory reaffirmed the radical republicans within his own party and indicated (to him, at least) that the country must continue on its push for a strict and strong Reconstruction. These policies began to become far too controversial the farther from the Civil War the country got. As a result, Conkling's re-election was the closest for a Republican since Lincoln's election in 1860. Nonetheless, Conkling and VP Blaine were re-elected in 1876.
Economic downturns in 1878, along with continued resistance to the scale and scope of Reconstruction, brought about an end, perhaps momentarily, of Republican dominance. The Democrats nominated Thomas Bayard of Delaware on a platform of unifying all aspects of the Democrats
and even Republicans, those descended from the Liberal Republican Party. His gamble paid off, Bayard defeated Vice-President James G. Blaine rather handily in the election of 1880.