You're hearing a lot of talk about "irregularities" in the election of 1876 that led to a "disputed" outcome. What is being referred to in this hazy terms?

Across the state of South Carolina, white conservatives had used terror and massacre to deter former slaves from voting in 1876. Here's the story of an attack upon the small town of Hamburg in July https://www.blackpast.org/african-american-history/hamburg-massacre-1876/

Hundreds of black South Carolinians were killed by white conservative militias. Blacks fought back in many places, but they were out-gunned.

The killings were not spontaneous outbursts. They were part of planned campaign of anti-black voter suppression.

http://ldhi.library.cofc.edu/exhibits/show/after_slavery_educator/unit_nine_documents/document_11

Some of the elements of the conservative plan to suppress black votes in South Carolina in 1876 sound queasily familiar in our own time, adjusting for the antique language and technology.

But back of it all was terror and violence, more violence than could be contained by the limited federal forces in the area - who were anyway constrained by the white conservative Democratic House majority elected in 1874.

The terror and violence worked. States where large black populations had formerly cast ballots were "redeemed" for the conservative cause - and for the presidential nominee of the racial conservatives, the Democrat, Samuel Tilden.

In the face of this campaign of terrorism, the two national parties struck a deal. The Republicans would accept the validity of white conservative voter suppression at the state level - if they could retain the presidency and its patronage. The bargain was made.

When modern senators propose to repeat 1876, they are not endorsing some Solomonic compromise. They are endorsing a negotiated concession to violent conservative minorities.

Over the next half century, the states "redeemed" by white conservatives shriveled into tight oligarchies. I described the process in my book Trumpocracy, p. 141

Democracy in the United States has a contested history. It's being contested again right now. The foundational idea of democracy is that each person counts. Let's commit to proving that theory true in the dangerous week ahead. END.