This is a very big problem, you can't have bags like "the left" or "the right" because that's too general to represent any meaningful philosophy.

As an example, many people would argue Clinton is left. I'd argue she's on the center right of the spectrum, if not further and would certainly not refer to her as left-wing in general. I'm not making a judgment here as to which is correct, but it demonstrates pretty clearly that broad labels are not at all helpful.