As it happens I have a very good friend who teaches political science at McMaster University in Hamilton; it's much closer to Toronto than Windsor, but still outside the Toronto bubble, and my understanding is that their department has a strong reputation (although perhaps a bit overshadowed by the engineering and science programs at Mac). That said, it may be more expensive than what you're looking to spend.

You should also consider what aspects of political science most interest you, and what you plan to do with the degree. Some Canadian programs have stronger training in the quantitative and formalist approaches that are dominant in the United States, while others are going to be more grounded in normative theory and qualitative research that is more popular in most of the rest of the world. Some programs may be very structured, and some may be more free-form. You may find that the emphasis at some universities may be different than what you're expecting, so finding a program that fits your interests is arguably at least as important as the right location and price.