Worst President of these three (19th-century Republicans)

[🦀🎂🦀🎂]

Hayes, even if only by virtue of the circumstances of his election.

To be fair, even though the Republicans totally stole the election; the Democrats were also doing their best to steal the election themselves by disenfranchising freedmen en masse in the South.

Anyway, I voted McKinley, due to his foreign misadventures; but it was a true coin toss between Hayes and McKinley.