I'll laugh when I wake up and realize my being in America right now was just a bad dream and actually I had moved many years prior to a nice little bungalow on the southern coast of Spain where I have a well-established vineyard and a little garden and coincidentally have become fluent in Spanish. I will laugh with particular enthusiasm over the news of the chaos in America just before settling in for my siesta, after which I'll make off-color jokes with my neighbors over a glass or two of homemade sherry about when we can expect Trump to meet with an unfortunate accident involving a window.
You have to register which party you are going to vote?! Really?
You must live in a civilized country.
You can say no preference or independent. One purpose of party affiliation is to determine which primaries you get to vote in. So if you are a Democrat you can't vote in a Republican primary. But of course you can switch any time.
The entire system is designed to ensure that only the two establishment parties can win elections.