Among the top reasons why Democrats in primaries and caucuses voted for Clinton was that they thought she would have a higher likelihood of beating the Republican nominee than Sanders did. This was the impression that the Democratic National Committee spread, and the Party's voters believed in it.

However, by the time when Election Day rolled around, the passion that Republicans felt for their nominee, Trump, was much stronger than was the passion that Democrats felt for their nominee, Clinton. During the Democratic primaries, polls were showing that the Democrats who were voting for Sanders to become their Party's nominee were far more passionate in their support of him than was the case regarding the Democrats who were voting for Clinton to become the Democratic nominee.