It was exactly as quoted in the original post.
Full context here. Maybe you're suggesting Trump supporters can't follow the line of questioning, which, heh, I'm not sure that's any better.
Two thousand, forty-three.
"Respondents were selected from YouGov’s opt-in Internet
panel using sample matching. A random sample
(stratified by age, gender, race, education, and region)
was selected from the 2010 American Community Study.
Voter registration was imputed from the November
2010 Current Population Survey Registration and Voting
Supplement. Religion, political interest, minor party
identification, and non-placement on an ideology scale,
were imputed from the 2008 Pew Religion in American
Life Survey"
So, they claim they randomly selected self-reporting internet results.
The voters are free to say they agreed with the Emancipation Proclamation all they want. Either the surveyors falsified data, or the results speak for themselves. But, they did drop 21 questions, maybe because they asked even worse stuff ("should Muslims carry special IDs?") and didn't get the results they wanted to broadcast.
...oh look at the time. I gotta go.