Not very important, but: as a lifelong Democrat (voting since about 1970), I have left the Democratic party over the DNC cheating. Fed. Up. In the past I have donated a ton of money to Democratic candidates, so I still get lots of calls; I politely explain each time why I am no longer a Democrat.

EDIT: some fundraising callers pretty much hang up on me in anger, but a lot are also sympathetic. Not hard evidence, but I have heard a convincing "I understand" often enough to think that a lot of rank and file Democrates are Fed. Up.