Black voters delivered Grant’s 1868 presidential victory.

Evidence

Millions of Blacks voted for president for the first time in armed southern Black counties that the Klan would not dare to enter, swinging the 1868 presidential election to a Republican war hero, General Ulysses S. Grant. Blacks voted into life what segregationists would begin their struggle to kill—the Black politician. — Ibram X. Kendi, Stamped from the Beginning, 655