Granted, I'm not American but my opinion has always been that it's silly to identify yourself as one choice or the other. If I labelled myself as a democrat for example and my party decided to put forward some idiot as their candidate, I'm not just going to vote for him/her out of some misguided sense of party loyalty, give me a good leader to vote for. Now in the states there's really only 2 options which makes the choice quite difficult if you don't like 1 of the 2 options and is why I think there should always be several choices. 2 only leads to this whole fragmented view of politics, you're either one of us or one of them......it just leads to fighting imo.
The only teeth strong enough to eat other teeth.