Dual Member Proportional (DMP) is a voting system that elects two representatives in every riding. It achieves proportional election results while giving nothing up in terms of local representation. The system will appear as one of five options on an upcoming electoral reform plebiscite on Prince Edward Island. Here’s a playlist of three videos from PEI on DMP:

Update (November 7, 2016): Mixed Member Proportional (MMP) just won the plebiscite. Click the link below for a bonus video, promoting both DMP and MMP. It was made pro bono by one of the many hard-working advocates of proportional representation on PEI:

https://www.facebook.com/PRActionTeam/videos/323713767985934/