What is a political science?

It handles aspects of society such as government, political parties and institutions and of course international relations.

Political science is a science.

Science is defined as a system that builds and collects knowledge and information in the form of testable explanations. If you think about it, political science is studying the workings of various...

Yes, you always capitalize all parts of a subject name.

Yes, It is. It studies political people , times, and the different types of ways to run governments.