Trump supporters dishonest with pollsters? Probably not.
Analysis by Harry Enten, CNN
Updated 6:12 AM ET, Wed February 28, 2018
... Marquette University Law School Professor Charles Franklin published an .. analysis of .. Trump's approval rating ... Trump tends to do better in polls in which there isn't a live interviewer present ... Philip Bump .. pointed out that this difference could arise out of people, especially Democrats, being afraid to admit support for Trump because it is socially undesirable ...
... I am quite skeptical that respondents are lying to pollsters ... The difference in results between the different types of polls probably has a lot to do with how different pollsters are obtaining their samples ...
... there are some internet surveys in which respondents are chosen at random (i.e. probability based) from the entire population. This allows us to test whether live interview surveys are less favorable to the President because (A) people don't want to say they back the President or (B). most internet samples are not probability based.
Respondents in these probability based online surveys were not more favorable to the President than in live interview polls. If anything, they were less favorable, which indicates that Americans aren't lying to live interview pollsters ...
https://www.cnn.com/2018/02/28/politics/voters-supporters-honest-trump-polls/index.html
