one who is zealous, one who is full of zeal for his own specific beliefs or objectives, usually in the negative sense of being too passionate; a fanatic
Yeah but to support your ideas and debate for them doesn't make you a fanatic. There is a difference between fanatism and to have stable opinion over a matter. If you cross the limit ofcourse then you become a zealot.
Till then you are just a healthy supporter, as we all are