Does that mean their political stances have changed, or just that "moderate" when referencing the space between D and R no longer applies to them? Moderate, to a lot of people, means "I could vote for either party" -- but when one party is unvotable, the tag "moderate" loses its appeal. So the trend of how people label themselves doesn't not necessarily represent a trend in changing politics for those people. Not in my mind, at least.