Dual Member Proportional (DMP)

Dual Member Proportional (DMP) is one of the three systems on the ballot in BC’s referendum.

DMP was created by Sean Graham in 2013. It was one of two proportional systems on the PEI plebiscite in 2016.

How it Works

With DMP, BC’s current single-member districts would be paired, to create half as many dual-member ridings. The BC Attorney General’s report recommends that a small number of the rural ridings remain single member ridings.

All candidates would run in their local dual-member district, and voters would choose their preferred pair of candidates.

The first seat in every district would go to the first candidate of the party with the most votes, while the second seat would be filled to create a proportional election outcome across the province.

.An advantage of DMP is the simplicity of the ballot. Just like first-past-the-post, it is one X for voters.

You can learn more about method to allocate the second seat here: https://dmpforcanada.com/how-it-works/


There is an excellent video and a lot more information on DMP on Sean Graham’s DMP site.