ranked-choice-voting

PyRankVote is a python library for different ranked-choice voting systems, like IRV, STV and PBV. Created in June 2019.

Voting systems comparison website. Simulate a single election in dozens of different voting methods including plurality, borda count, instant runoff, bucklin, copeland, and many more!

Effortlessly set up and conduct ranked choice voting

Election Simulator 3000: Monte Carlo simulations of voting methods and metrics under different voter models

Ranked choice voting javascript/typescript library

Simple API for ranked-choice voting in an election

A program for comparing electoral systems. Supports instant-runoff voting, first-past-the-post, the Borda count, and more.

Online ranked-choice polls made quick and easy

PrefVote is to promote ranked-choice preference voting algorithms. Updated with Condorcet voting algorithms, it's descended from the Vote::STV software which I wrote in Perl originally in 1998 and used by multiple clubs and non-profit organizations over the years for polls and elections.

This plugin allows sorting a list of options by preference of the user, instead of just selecting one.

A python implementation of Scottish Single Transferable Vote process

IRV algorithm with a "no endorsement" option

A Python package to allocate unequal contributions from multiple participants across several projects with different budgets. Based on the single transferable vote ranked choice voting protocol.

Onchain ranked-choice voting for DAOs with Copeland and Schulze methods

multi-member district simulation based off H.R.3863

Evaluate ranked-choice elections in a notebook interface. Able to import a wide-range of elections and detect non-monotonic results.

Generate HTML ranked-choice voting (RCV) results pages from Dominion RCV results reports.

Preferential voting engine in dependency-free C11: instant-runoff, Borda and plurality counting over text/CSV/JSON ballots, built as a static library with a CLI front end.

Collect ranked ballots (pass the phone or share codes, no server) and compare plurality, Borda, IRV, Condorcet, Schulze, Ranked Pairs, Copeland, approval, STAR and Kemeny-Young

Read castvote records from multiple vendors, normalize them to a common long-format schema, parse official round-by-round reports, and tabulate instant-runoff elections under configurable rules.