NBC News
The biggest difference between the successes of Clinton and Obama, who got re-elected, and the failure of the Biden-Harris team to win four more years was their midterm experiences. Both Clinton and Obama got clobbered, forcing them to rethink some of their policies and how to sell them.
Biden and the party as a whole took the Democrats’ “better than expected” performance in the 2022 midterms, when they still lost the House but gained a Senate seat, as a sign that they were on to something and that they didn’t need to course-correct as much as polling was actually telling them to course-correct.