I think Jody Bottum has an outstanding post on all of this, particularly his observation — echoed around here by many of us over the years — that the left = pro-science, right = anti-science formulation was always deeply problematic, and is quite often simply a canard. It won’t go away on issues like global warming — too many chips have been bet there — but you can see how on the biological sciences more on the left will move toward the anti-frankenfood and bring-me-the-head-of-Larry-Summers crowd.