https://www.nytimes.com/2021/06/30/us/politics/pew-election-2020.html
The Pew data, released on Wednesday, is the latest and perhaps the last major tranche of high-quality data on voter preference and turnout in the 2020 election, bringing analysts close to a final, if still imperfect, account of the outcome.
The data suggests that the progressive vision of winning a presidential election simply by mobilizing strong support from Democratic constituencies simply did not materialize for Mr. Biden. While many Democrats had hoped to overwhelm Mr. Trump with a surge in turnout among young and nonwhite voters, the new data confirms that neither candidate claimed a decisive advantage in the highest turnout election since 1900.
Instead, Mr. Trump enjoyed a turnout advantage fairly similar to his edge in 2016, when many Democrats blamed Hillary Clinton’s defeat on a failure to mobilize young and nonwhite voters. If anything, Mr. Trump enjoyed an even larger turnout edge while Mr. Biden lost ground among nearly every Democratic base constituency. Only his gains among moderate to conservative voting groups allowed him to prevail.