They'll canvas like mad, don't get me wrong, been getting that crap through my letterbox as well. What's really interesting though is how that go vote propaganda has really fallen off a cliff and it's almost certainly because even the elites have realised a good chunk of the non-voters are going to be making up the people who vote the other way. I don't know how it is in America, but it's been interesting seeing the stats finally coming in with the vote turn out being higher than ever and all of a sudden Le Pen is in the lead lulz.
It used to be something of a fixture in western democracies back in the day with politicians sometimes even floating the idea of mandatory voting like in Australia which is cancer.
Also, not having compulsory seems to only help the left who are motivated activists, whereas most right voting people are too busy running their businesses and supporting their communites.