Tea Party Wisconsin Congressman Sean Duffy is the latest extremist Republican to take a stand against science in opposing routine vaccinations, begging the question -- where does presidential candidate Scott Walker stand on vaccines?

Following a measles outbreak in California linked to an increasing number of unvaccinated children, President Obama urged all parents to make sure their children were fully vaccinated. It then took less than 24 hours for the far-right to start voicing their opposition to vaccines, even though the science on the individual safety -- and necessity for herd immunity -- of vaccines has long been settled. 

Republican presidential candidates Chris Christie and Rand Paul were the first out of the gate to criticize mandatory vaccines for diseases like measles -- a potentially fatal disease that has been virtually eradicated due to routine vaccination -- and now Wisconsin Rep. Sean Duffy has chimed in on the topic saying on MSNBC's "The Rundown With José Díaz-Balart" this morning that an "oppressive state" shouldn't tell parents what to do as far as vaccinating their children.

Following Duffy's comments, Talking Points Memo reports: "The Wisconsin congressman explicitly defended vaccine critics, saying: "I think a lot of parents who are smart, well-read — they're the ones who are choosing not to vaccinate. And oftentimes, those who may not be as well-read — they are vaccinating. So to say you just have a bunch of crackpots who are choosing not to do this to their children, I just don't think that's actually true.""
Duffy also added that, "I vaccinate my kids on most things, but then there are some things where I'm like, 'This may not work for me and my values and my family.'"

"Protection from which deadly childhood diseases doesn't work with Sean Duffy's morals and values?" Democratic Party of Wisconsin Chair Mike Tate said Tuesday. "And does Scott Walker agree with Duffy and the other Republican candidates for president who are so committed to opposing President Obama at any cost that they are completely ignoring settled science on a critical public health and safety issue like routine vaccinations?"