That is a large herd of dead horses you are flogging there...
As for the topic at hand, I can only answer for what happened in Canada. The media really overplayed the so-called "Trump threat". People foolishly fell for it, and forgot the results of the previous 10 years of Liberal mismanagement of the economy. Now, the Conservatives also screwed the pooch. Their campaign was caught flat footed when the PM was forced to resign.
I am curious what the demographic spread of the vote will be in Oz. In Canada, the biggest groups to prop up the Liberals were Boomers, government workers, and the upper middle class. The conservative vote was younger, less affluent, and more male.