Why pander to a political party at all? One does not need to be Democrat or Republican to be a good American .. in fact, a good American will not tow a party line, they'll look at all of the candidates (be it local, state, or POTUS) and decide on the man (or woman) and not his/her affiliation with a party. On the whole, Democrats and Republicans do not care about you. You're the little guy, you don't make enough money to contribute large amounts to their campaigns. Sure, they want your vote, and sure they may try and keep you happy. But you are not their main concern. When you're old enough to vote, when you've done your research .. you can make a choice to become a Democrat or a Republican. If you have to ask someone what you should be, then you aren't ready. If you decide to remain neutral, and look at everyone with a fresh eye .. all you'll have to do is register for that particular party, vote for the candidate .. then go back to being an independent, or what have you.
Until then, read the news .. and not just one source, read several. Research the history of the parties. Research former Presidents, Senators and what their views were. You are young, and can't vote .. but that doesn't mean you cannot become informed. There are too many voting Americans that are spoon fed their information already, don't be one of those.