I want to make an important distinction. The recommendation was to hold the election on a Saturday or Sunday, instead of a Monday, not in addition to a Monday. That was discussed in relation to Bill C-19. It would give voters some flexibility and make it possible for those who work on elections, or would like to work on elections, to do so even if they have a job or go to school. That would make it easier for us to recruit workers.
It would also make schools more available to us. In 2019, a total of 46% of electors cast their ballots in schools. I don't have the figure for the last election, but it was a fairly minor percentage. We lost much of that access to schools. If Monday were added to the two weekend days, some places would not be available all three days.
Giving people more opportunities to vote is a good thing, but my preference would be to hold election day on the weekend, rather than over three days.