Vive la république!

Here's an issue that I would love to see go to a vote in Canada via a referendum. As for Australia, the two questions were fairly close the last time, but were ultimately defeated. Although the plebiscite did raise some concerns:

Critics of the referendum argued that it was rigged in favour of monarchists because it gave voters only the option of having Parliament elect a President and not the direct election of a head of state by the people.

Which [again] is why they should have a preferential ballot with multi-options where the bottom option is knocked off the ballot after each round until 50 per cent + 1 is acquired.