• Proposition - Yes/No
   
• Proposition - Yes/No/Abstain
   
• Proposition - Yes/No/ with Concensus Rules
   
• First Past the Post
   
• First Past the Post with Concensus Rules
   
• Single Non Transferrable Vote
   
• Approval (range) Voting
   
• Range Voting
   
• Runoff Electoral Process
   
• Preferential Voting ( IRV, STV, Hare-Clark)
   
• Preferential Voting with Concensus Rules
   
• Block (Cumulative) Voting
   
• Equal Cumulative Voting
   
• Weighted Cumulative Voting
   
• Ratings: Average / Median / Cumulative
   
• Borda Count
   
• Mixed Member Proportional / Additional Member System
   
• Condorcet (Minimax / Schulze / Ranked Pairs)
   
• Parallel Voting
   

Description:  AMS (Additional Member System)

MMP (Mixed Member Proportional) or "Top-Up"

SUP (Supplementary Member) or Parallel Voting

Often use a threshold of exclusion.

Commentary:  

History:  Fairly New System that has been widely adopted.

It was answer to making the counting process in a Quota Preferential Proportional Representation election a lot simpler.

Examples:  

External Links: