Pref.Tools: ABC Voting

This page allows you to instantly compute approval-based committee voting rules online, including PAV (Proportional Approval Voting), Phragmén's methods, and the Method of Equal Shares. 27 voting rules are available. The computations are done locally in your browser. You can also generate random profiles. By clicking on a selected committee, you can check the axiomatic properties of the committee and the algorithm's steps for finding it.

Drop a file to import. Supported formats:
  • matrix .txt
  • preflib (.soi, .toi, .soc, .toc)
  • .abc.yaml