Hillary Clinton’s bitter remarks about Sen. Bernie Sanders take me back to the good old days — to 2016 and the worst presidential campaign in modern U.S. history.

Clinton had two main problems when she ran in 2016. The first is that she might be the least sincere person ever to run for office. The second is that she also comes across as the least sincere person ever to run for office. Her personal flaws, combined with her campaign’s disastrous strategic miscalculations, caused her to lose an unlosable presidential race against a candidate whose approval rating was under 40% on the day of the election.