> 31% of Trump voters think vaccines cause autism?
> That's a radical shift from the 6% of Americans who thought so according to a Gallup survey
The Gallup poll was filing people into three categories on that question (yes/no/uncertain). The YouGov survey filed them into four categories (definitely yes/probably yes/probably no/definitely no). If we assume that the two "probably" categories in the latter correspond to the "uncertain" category in the former, the results of the two surveys are fairly close.
https://www.washingtonpost.com/news/rampage/wp/2016/12/28/am...
52% of Trump voters believe Obama was born in Kenya?
9% of Trump voters believe Russia tampered with vote tallies in order to get Trump elected?
31% of Trump voters think vaccines cause autism?
That's a radical shift from the 6% of Americans who thought so according to a Gallup survey:
http://www.huffingtonpost.com/2015/03/06/gallup-poll-vaccine...