If what you say is true, there must be some underlying outlook or philosophy that leads to one or the other. What I suspect is that's true for some kinds of is

If what you say is true, there must be some underlying outlook or philosophy that leads to one or the other. What I suspect is that's true for some kinds of issues, but other issues are more of a mixed bag that just happened to end up polarized. Maybe those other issues are important enough to make a third party worthwhile.