Dear, scoring trend is a vogue, I do not beleive on it. Any subject which you prepare well will give you good marks. That is it. I only believe that those subjects should be opted which require less input and give big output.
As far as Political science is concerned, I have no idea about the subject and its syllabus. You should concern the aspirants who opted it in their attempts and then develop your combination.

__________________
“The people who are crazy enough to think they can change the world are the ones who do.”