2020 was the SECOND Presidential election marked by massive electoral fraud. 1876 was the first.

https://en.wikipedia.org/wiki/1876_United_States_presidential_election

1876 United States presidential election

Presidential elections were held in the United States on November 7, 1876. The Republican ticket of Governor Rutherford B. Hayes of Ohio and House Representative William A. Wheeler of New York very narrowly defeated the Democratic ticket of Governor Samuel J. Tilden of New York and Governor Thomas A. Hendricks of Indiana.

Following President Ulysses S. Grant's decision to retire after his second term, U.S. Representative James G. Blaine emerged as frontrunner for the Republican nomination; however, Blaine was unable to win a majority at the 1876 Republican National Convention, which settled on Hayes as a compromise candidate. The 1876 Democratic National Convention nominated Tilden on the second ballot.

The election was among the most contentious in American history, and was widely speculated to have been resolved by the Compromise of 1877, in which Hayes supposedly agreed to end Reconstruction in exchange for the presidency. In the first count, Tilden had 184 electoral votes (one vote short of a majority) to Hayes's 165, with the 20 votes from Florida, Louisiana, South Carolina, and Oregon disputed. To address this constitutional crisis, Congress established the Electoral Commission, which awarded all twenty votes and thus the presidency to Hayes in a strict party-line vote. Some Democratic representatives filibustered the commission's decision, hoping to prevent Hayes's inauguration; their filibuster was ultimately ended by party leader Samuel J. Randall. On March 2, 1877, the House and Senate confirmed Hayes as president. This was the last election taken under Reconstruction, in which some Southern states voted for a Republican candidate. Following the election, Southern states were able to fully implement Jim Crow laws, disenfranchising black Americans, and beginning a period of Democratic domination known as the Solid South. No Republican presidential nominee would win a former Confederate state until Warren G. Harding in the 1920 United States presidential election.

It was the fifth of six consecutive presidential election victories for the Republican Party and the second of five U.S. presidential elections in which the winner did not win a plurality of the national popular vote, after the 1824 election. Although Tilden defeated Hayes in the official popular vote tally, the election involved substantial electoral fraud, voter intimidation by paramilitary groups such as the Red Shirts, and disenfranchisement of black Republicans. The election had the highest voter turnout of the eligible voting-age population in American history, at 82.6%.[2][3] Tilden's share of the popular vote, 50.9%, is the largest received by a candidate who was not elected to the presidency, and he was the first losing candidate in a U.S. presidential election who won a majority of the popular vote. Tilden was also the last person to win an outright majority of the popular vote until William McKinley in 1896. As of 2024, this remains the only presidential election in which both candidates were sitting governors, and was the last presidential election during which the presidential electors of a state (Colorado) were appointed at the discretion of the state legislature rather than by popular vote.