[Oratam]

Didn’t Nixon do the same thing in 1960?

[Yardstick]

Yes, I think it’s pretty well established that the Daley machine used vote fraud to swing Illinois for Kennedy in 1960, and Nixon opted not to challenge it.

[ProtectOurFreedom]

Didn’t Nixon do the same thing in 1960?

Yep. United States presidential election, 1960. Scroll down to "Controversies."