Here goes my methodology soapbox. If anyone wanted a serious study of how conservatism or any other factor affects college admission, they would run a logistic regression or some similar statistical technique. In the absence of peer reviewed research or the relevant data, which colleges don’t make public, that’s not possible, so you end up with a lot of speculation. If you want to know what percent of the student body shares any particular characteristic, surveys and polls are almost always going to be far more reliable than anecdotes. Surveys and polls may not tell you why a particular group is over or underrepresented. However, they’re likely to yield a far more accurate estimate of whether a group is over or underrepresented than anecdotes of the variety: I knew some redheads who got admitted to an Ivy, and they were loud and obnoxious about being redheads, therefore I can assure you redheads aren’t underrepresented on campus.