Many Cruz supporters left in November and December.
An excerpt from 11/5 email to me when Trump totally lost me and I posted:
I have been put through the hit list and suddenly the language that is posted is stuff like FU, STFU (but it is spelled out completely) They will accuse you of being a SEIU plant, a wanker, a troll and many other labels that get sent along with a list of others that will go through with the attack process. When done with that and you have not succumbed to their agenda they will go after you personally> I have gone through the entire process so far.
I have never seen that poster post again. My sis who rarely posted quit looking here about a month ago. FR may as well be trump campaign headquarters.
My point is the exodus from FR began in early November if not before. Reasoned, logical arguments made by reasonable people who are treated with such disrespect - they just left.
I have one foot out the door myself - pinglists are all shut off, tore down my profile page, just hanging around a day or two to finish up...