See both of the courses you have mentioned are good and is academic kind of courses although there are application of the subject as well. Now you can go for any of the subject based on your interest. See there is no such subject which has the property to give you success in your career. Its you and your knowledge that speaks. So I would recommend you to choose a subject of your choice which you think is appropriate for you and you are really interested go for it. Both the courses you have mentioned have great scope in future. SO you have nothing to worry about.

To know more about Political Science visit the link below:

https://www.careers360.com/courses/political-science-course

To know more about BA visit the link below:

https://www.careers360.com/courses/b-a-bachelor-of-arts

I hope this answer helps. All the very best for your future endeavors!