@goodkidmaadcity There is absolutely a connection between cognitive and virtually everything. I love neuroscience. If I had not changed my future goals, then I would still be studying exactly that.
The point that I was making is that there is no better preparation for law school then a Philosophy B.A. Likewise, the Ethnic Studies program at UCSD is one of the best in the state. It would be a great second major for someone who is interested in representing average citizens rather than working in Big Law. Either of those would be excellent second majors alongside a PoliSci degree.
There is nothing specifically wrong with pairing a hard science with political science, but it should not be because you think that it would be more marketable because philosophy will no doubt strength your practical and argumentative skills far far more for the LSAT and law school. Ethnic studies will show employers that you are very knowledge working in diverse communities. Cognitive Science is interesting; however, there is not a job outside of academic research where you would realistically be using the bulk of that knowledge. Not to mention, the additional coursework and unit requirements which would come from trying to complete a Cognitive Science B.S. rather than another B.A.
I am a supporter of those who double major in seemingly unrelated fields. It is just that the two interests that you first mentioned are excellent studies for those interested in law and politics, I don’t want you to shy away from them out of employment fears because they are two of the most marketable degrees for our field.