Go to file
Adrian Gunnar Lauterer a60283b9de
update cargo.lock
2024-03-16 20:28:21 +01:00
docs Implement --surplus-assume-total 2023-06-11 21:47:55 +10:00
homepage Update documentation 2022-06-18 02:02:00 +10:00
html Implement --surplus-assume-total 2023-06-11 21:47:55 +10:00
scripts Add draft functional specifications 2022-11-06 21:50:25 +11:00
src Implement --surplus-assume-total 2023-06-11 21:47:55 +10:00
tests Add test case for Western Australia STV 2023-06-12 15:53:41 +10:00
.gitignore Add draft functional specifications 2022-11-06 21:50:25 +11:00
COPYING Initial commit 2021-05-28 20:03:55 +10:00
Cargo.lock update cargo.lock 2024-03-16 20:28:21 +01:00
Cargo.toml Update to prettytable 0.10.0 2023-02-01 18:26:45 +11:00
README.md Rename docs files to avoid reserved Windows paths 2022-01-04 18:26:15 +11:00



OpenTally is an application for counting various preferential voting elections, with an academic focus, and emphasis on configurability.

OpenTally may be used in a number of different ways:

  • as an online web application, no installation or special software required
  • as a standalone command line application
  • as a Rust library within another application


OpenTally accepts data in the BLT file format, and can count votes using:

OpenTally is highly customisable, including options for:

  • different quotas and quota rules (e.g. exact Droop, Hare)
  • calculations using fixed-point arithmetic, guarded fixed-point (quasi-exact) or exact rational numbers
  • different tie breaking rules (backwards, random, manual) with auditable deterministic random number generation
  • multiple constraints (e.g. affirmative action rules)
  • equal rankings

Online usage

See the quick start guide for how to use OpenTally online.

Command line usage

OpenTally may also be invoked as a command line application. Run ./opentally --help to view help.

For example, run ./opentally stv path/to/blt_file.blt --ties backwards random --random-seed foobar.