Alberta grew too much in the last decade, people swarming in hoping to enjoy the higher per capita earnings, the highest paid public sector in all of Canada, the low taxes and the general prosperity that all those things bring.

As people piled in, that prosperity began to diminish somewhat - the same public services we paid a lot for couldn't help everyone, and people started to demand more free stuff from the government (a government which is running very low to the ground and doesnt have a lot of money for free stuff).

As people leave, those who remain will see their lives return to normalcy as the insane price spikes make commodity prices shoot through the roof. Almost all those leaving are definitely lefties, those who are conservative here aren't in a position to leave (or have a job that requires them to be here).

And.. as time goes, people will see the prosperity Alberta gains having lost a bunch of nonproductive citizens and think "oh, people there are doing well, maybe I'll pile in, too!". The cycle will repeat!