> Only one side denies medical consensus on vaccines

You’re incorrect about this one AFAIK. From the Safety of Childhood MMR Vaccine section of [0]:

> There are no differences between party groups about this issue. Moderates are a bit more likely than either conservatives or liberals to say that childhood vaccines are generally safe.

[0] https://www.pewresearch.org/science/2015/07/01/chapter-5-pub...