Robert F. Kennedy Jr.'s anti-vaccine advocacy is outside the mainstream. His previous statements on abortion could alienate Republicans. But a new poll finds that not all of his controversial health goals are unpopular — in fact,

A longtime environmental lawyer with no experience working in public health administration or medicine, Kennedy is known for his work in questioning the safety and efficacy of vaccines, including encouraging parents not to adhere to vaccination recommendations and helping to sue a vaccine manufacturer for what he alleged was marketing fraud.