I was considering going into Political Science but everyone says liberal arts or social sciences are a waste of a time, because you won`t get a job. Any intake will be helpful.

Now everyone who were to give you their opinion on this matter has their own bias, and having applied to only Poli-Sci programs throughout Canada, of course I am biased, but here are my two cents, and I believe they're pretty fair.

It is really common that people will jokingly, but with a tad of seriousness, equate a Bachelor of Arts degree with a high school degree and say that it won't get you a job.

This is true.

Because YOU will get you a job. Unlike Engineering or BioMed, where people don't find too much trouble in locating entry-level jobs right out of their undergrad, with the Arts, it's a bit different. It's silly to say that you won't find a job, because a Poli-Sci degree basically enables you to have critical-thinking skills and a knack for creative thinking. If you want a job, YOU will have to go find that co-op placement or internship that will help you get your foot in the door of opportunity when it comes to full-time work, YOU will have to get involved in your school community in ways that you think potential employers will see as being valuable to your work with them, having that experience.

People think you can go to university and suddenly, with a degree, the world is begging for you to work with them, but you have to take the initiative in seeking them out and working hard. Many people pursue a Masters degree, because it is a higher level of education that could promise a better job in the future, but not necessarily more successful than the eager poli-sci undergrad who found the perfect internship and convened with their professors frequently, networked with the right professionals, to establish himself in the work force.

Sorry for the novel, but in all honesty, any shorter a response wouldn't have done your worry justice - I had a similar one, and I simply did research, qualitative and quantitative, and have come to this conclusion.

Best of luck!

Again, I'm biased because I'm doing public policy next year, but I think you have to look at the reasons that you want a political science degree. If you're choosing political science because you don't know what you want to do (Which I feel too many people do) then it's probably the wrong field for you. Likewise, if you've never shown any interest in things related to political science (history, philosophy, debate, politics, women's studies, sociology, human rights, economics etc..) it may not be a field that you'll be passionate about.
I know that I've been interested in a lot of these topics for most of my life, so it's not like I'm stepping into completely uncharted territory. As someone above me said, it's not going to be a field where you can just take courses aimlessly and apply to a dozen, readily available job postings after graduating. If you think that you have the passion, that you'll be dedicated enough to work harder for the position that you want than the thousands of students that enter political science for the wrong reasons, then I think it's a worthwhile degree. If you're not sure and could just as easily choose another degree then maybe it's not for you.