Ontario, Canada’s largest province, is going to have a referendum on whether to move from FPP to MMP for their provincial elections.
Their version of MMP will have a 3% threshold, a Parliament of 119 with 70 electorates and 29 list seats.
The decision to have a referendum wasn’t made in secret by the Government but by a an independent assembly of 102 citizens who were chosen randomly to study the electoral system.
As a constitutional amendment, it will need more than a bare majority to pass. Overall it needs at least a 60% vote in favour, plus it needs at leats 64 of the 103 ridings to vote in favour (by a basic majority).