"In 2008, Barack Obama earned 69,498,516 votes in the presidential election, the most ever. Now, Mr. Obama's former vice president, Joe Biden, has *far surpassed* that tally, setting a new record with more than 81,284,000 votes in the 2020 election."
https://www.cbsnews.com/news/joe-biden-popular-vote-record-barack-obama-us-presidential-election-donald-trump/
Obama: 69M
Biden: 81M (2020)
Harris: 66M
We all saw the shady stuff that happened in the 2020 election, with lack of transparency and ballot harvesting on a large scale. Some of it was technically legal due to the last-minute changes made by Democrats under the pretext of COVID. And some of it was simply fraud that was impossible to prove, also because of those last-minute changes.
Again, 69M —> 81M —> 66M.