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In 2020 with a swing of about 120,000 votes in four states -- Arizona, Georgia, Pennsylvania and Wisconsin -- trump would have won the Electoral College vote which is based on the number of states the candidate wins, not the total popular vote. With those 120,000 votes in those four states trump could still have lost the popular vote by almost 7 million yet he'd be president right now.
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It's worse than that. In 2020, if Trump had won just about 43,000 more votes in three states, he would have thrown the election into the House, where the Repubs would have elected him. If he had won about 65,000 votes in four states, he would have won.
https://www.cfr.org/blog/2020-election-numbersIf Trump picked up the right mix of 42,921 votes in Arizona (10,457), Georgia (11,779), and Wisconsin (20,682), the Electoral College would have been tied at 269 all. The House would have then decided the election. Republicans will hold the majority of state delegations in the new Congress, and they undoubtedly would have chosen Trump. If Trump had also picked up the one electoral vote in Nebraska’s Second Congressional District, which he lost to Biden by 22,091 votes, he would have won the Electoral College outright.