A career in Political Science requires a great level of interest and some very specific skills.
If you like reading the newspapers and knowing about world events then you have the interest. That is the easy part.
The tough part is the skill. Political Science, unlike other careers, requires quite a bit of Critical Thinking skills. When you look at political developments around the world, lots of trade deals are struck, military agreements are signed and diplomatic treaties are discussed. A political scientist needs to be able to put them in perspective by trying the understand how these developments affect different countries and the people. And this is not a simple issue.
For example, lets say a Uranium trade deal is signed between India and Australia where Australia agrees to supply unlimited Uranium to India. A political analyst needs to be able to evaluate how this deal will positively and negatively affect India and what would the effect of that deal on countries like Pakistan or China and how are they likely to react.
As you can see, your analysis will require fantastic writing and communication skills along with critical reasoning. In order to do a proper thought provoking analysis you need to know that current state of affairs in different countries and how world developments affect their functioning.