The republican party has become way more anti-science
because of its desire to purge moderates from the party. Rockefeller Republicans are becoming extinct, and they were the buffer against far right nonsense; as a result, the republican party is turning into some kind of religious-conservative party.
Anti-science has always been an issue in America throughout history. But in general, the movement has been weak, and it has been mostly on the fringes of either the far right or far left. But what we are seeing today is something altogether different. One can http://www.asanet.org/press/conservatives_trust_has_fallen.cfm it. And there has been nothing but a bombardment of bills to mess with science education in states around America from this group. My own state just recently passed such a bill. Some of the creationist museums are getting
funding from states. So there is a significant anti-science movement growing in America that's gaining a great deal of support from conservatives in both parties. But republicans are building a platform out of it.
Basically, I think the hostility against poll numbers and unemployment numbers is born out of this growing anti-science movement.