Why is the cartoonist comparing the knowledge of a television show to knowledge of one's representatives in Congress?

A cartoonist will be guided by his or her point of view. Cartoonists might only express their own beliefs on an issue, or they might take the point of view of others into consideration.

Political cartoons can be very funny, especially if you understand the issue that they're commenting on. Their main purpose, though, is not to amuse you but to persuade you. A good political cartoon makes you think about current events, but it also tries to sway your opinion toward the cartoonist's point of view.