Yeah, but every single candidate for President other than Clinton has at some point raised questions about whether Vaccines actually kill you:
Donald J. Trump
‏@realDonaldTrump
Healthy young child goes to doctor, gets pumped with massive shot of many vaccines, doesn't feel good and changes - AUTISM. Many such cases!
Gov. Gary Johnson
‏@GovGaryJohnson
No to mandatory vaccines
And Stein's position is pretty well-known. Why is there this weird appeal to pseudo-science? Like, why is that position so popular among wingnuts?
Comfirmation bias at a level of religious fervor is never good for rational, unbiased thinking.