We don't have any data on cynicism. It's important to recognize that.
As a trained historian, I tend to put things into context historically.
Having read what politicians experienced in the past, I don't have the sense that people are more cynical today than they used to be. There were times in history when prime ministers lost in their own ridings. It hasn't happened in Canada in a long time, but it occasionally happens at the provincial level, mainly in Quebec.
I don't have the sense that a particular brand of cynicism is plaguing the system. I admit that, in the 1980s, a drop in voter turnout was noted among Canadians, but keep in mind the entire western world experienced that trend. The statistics on that are very clear. Whether you're talking about France, England, Canada, Belgium, or the United States, all of them have seen a decline in voter turnout since the early 1980s, but it's starting to improve.
As Professor Russell mentioned, we may be seeing a rebound. Cynicism is less prevalent than it used to be. But that's just my impression.