Three of those are policy issues (how much testing should be done on GMO's, how risk adverse should we be on nuclear power plants given the potential for shoddy

Three of those are policy issues (how much testing should be done on GMO's, how risk adverse should we be on nuclear power plants given the potential for shoddy construction like in Fukushima, where should we build energy plants and refineries). On these issues, the democrats are being, ironically enough, conservative, as in risk adverse. They are not denying that you _can_ grow GMO's, that you _can_ split the atom, or that you _can_ perform hydraulic fracking (which Obama has supported, so I don't see how this is a democrat issue). This is in stark contrast to the previous issues where the mere existence of a phenomenon (evolution, global warming, and the big bang) is denied. With luck, global warming will move into the policy disagreement realm, and out denial box soon. Anti-vaccination is a fringe movement, and party independent (Michelle Bachmann got on the anti-vax wagon). The democrats aren't putting anti-vaxxers on the house science committee.