As most folks know, Donald Trump won the 2016 Electoral College but Hillary Clinton won the popular vote by nearly 2.9 million. Turns out, Trump fans believe he won the 2016 popular vote. He didn't, but let's forget the facts.
In that poll linked above, here are the poll's topline results and here are the more interesting crosstabs. Let's focus on the latter. By the way, if you're searching for the question, it's POL18.
The question asked: Based on what you know, who received the most votes from the general population in the 2016 presidential election?
Overall, 28 percent of respondents said incorrectly that Trump won the popular vote and among Trump voters, 49 percent incorrectly said he received more votes. Men and women were about equally incorrect on this question. As you'd expect, education plays a role. Among the lowest education group, 31 percent said Trump won while in the highest education group, 21 percent said he received the most popular votes.