The implication is that knowledge acquisition is co-related with left-leaning politics?That's a very good question. If you don't mind, I'd like to tweak it a bit first. As a libertarian myself, and from my association with other libertarians, I believe that people of that political bent are also much more likely to pursue a rational truth. So I'd like to re-do the boolean algebra to refer to "non-right-leaning" rather than "left-leaning".
Anyway, the premise is partly flawed. I gave an example of economics, and other examples were cited such as opposition to GM crops, where those on the left are clearly in opposition to the best available scientific understanding.
But by my own observation, it does appear that as a generalization your premise holds strongly for the life sciences, and also holds for hard sciences like physics and chemistry. I think it would be interesting to pursue that.
HOWEVER, I think that while considering it, that we are careful to keep science and policy separated. Even if we are to grant that a certain point of science is correct, it does not necessarily lead to acceptance of a point of policy.
For example, it is well known that at the margin, minimum wage laws increase unemployment amongst the least skilled workers. But it doesn't automatically follow that such a policy should not be followed; perhaps with a proper safety net, those bottom-rung folks can be motivated into improving themselves. Likewise (and even more controversially), even if climate change is as serious as some claim, it does not necessarily follow that all efforts must be pursued: it may be that the cost of fixing it exceeds the cost of the expected damage.
It's just too easy to say "we have this problem, thus we must do something". The values that drive our actions are different from the science that allows us to understand the world.