Dual member proportional

Dual-member proportional representation (DMP), also known as dual-member mixed proportional, is an electoral system designed to produce proportional election results across a region by electing two representatives in each of the region’s districts. The 1st seat in every district is awarded to the candidate who receives the most votes, similar to first-past-the-post voting (FPTP). The 2nd seat is awarded to one of the remaining district candidates so that proportionality is achieved across the region, using a calculation that aims to award parties their seats in the districts where they had their strongest performances.

Links

 * https://dmpforcanada.com/ - According to Fair Vote Canada, this is Sean Graham’s website.
 * https://www.fairvote.ca/dual-member-proportional/ - Fair Vote Canada's resource page for Dual-Member Proportional