@ironcross32, american politics with two parties is has always seemed crazy to me, and frankly after spending time in the states, it seems all the crazier for exactly the reason you have just given, namely that things over there are so polarised you are either a democrat or! a republican! and nothing else, irrespective of what the two parties actually argue, or who is put up as a candidate, or whether you actually like the candidate your party puts up, because there are only two sides, and it's more important to support your side than anything else, and obviously what the other side do and think is always wrong!
Btw, there's a great book my lady and I read together recently concerning Donald trump, the immoral majority bye Ben Hoe.
This is a book written by a republican right wing christian (and one who is equally not fond of the democrats), but who details some of the down right scary versions of double think used to get trump into power and the ways the party has acted
Obviously, we did not agree with Hoe on everything, but being written from the perspective it's written from, and given the extremely partisan nature of American politics, it was a really fascinating, and indeed frightening read.
As to the above mentioned "criticism" argument however, it's not so much that I would argue anyone who did not vote cannot criticise their government, or would criticise anyone myself, it's just that I! personally feel better having actually done! something and made a statement via the democratic process, rather than having done nothing.
For example, last election I asked my dad to write on the ballot "I don't trust any of you."
Did it make a difference? I don't know, but I don't think voting for any of the major parties would've done anyway, however I can legitimately say that yes, I did! actually say something.
Again, this is just based on how I feel about the generally crappy situation that is British politics, and society at large.
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)