https://github.com/juliuste/sainte-lague

Sainte-Laguë method for seat distribution used in multiple parliamentary elections all over the world.
https://github.com/juliuste/sainte-lague

election library

Last synced: about 2 months ago
JSON representation

Sainte-Laguë method for seat distribution used in multiple parliamentary elections all over the world.

• Host: GitHub
• URL: https://github.com/juliuste/sainte-lague
• Owner: juliuste
• License: isc
• Created: 2016-11-13T19:47:41.000Z (about 8 years ago)
• Default Branch: main
• Last Pushed: 2022-05-26T16:14:56.000Z (over 2 years ago)
• Last Synced: 2024-10-17T04:54:27.246Z (2 months ago)
• Topics: election, library
• Language: JavaScript
• Size: 34.2 KB
• Stars: 11
• Watchers: 4
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: license

Awesome Lists containing this project

README

        
# sainte-lague

An implementation of the **[Sainte-Laguë](https://en.wikipedia.org/wiki/Webster/Sainte-Lagu%C3%AB_method)** (also known as **Webster** or **Schepers**) method. Parliament seat allocation algorithm used in multiple countries such as Germany, Latvia, New Zealand etc…

*Attention: Since some countries (like Latvia or Norway) use a modification of the algorithm instead of this vanilla version, you should check your country's electoral legislature. Furthermore, I don't take any responsibility for the accuracy of the calculated numbers, even though I'm pretty confident with my implementation.*

[![npm version](https://img.shields.io/npm/v/sainte-lague.svg)](https://www.npmjs.com/package/sainte-lague)

[![License](https://img.shields.io/github/license/juliuste/sainte-lague.svg?style=flat)](license)

[![Contact me](https://img.shields.io/badge/contact-email-turquoise)](mailto:[email protected])

## Installation

```shell

npm install sainte-lague

```

## Usage

**This package is [ESM only](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c).**

```js

import sainteLague from 'sainte-lague'

const electionResults = { // number of votes per party

	socialists: 130755,

	conservatives: 102068,

	liberals: 34012,

	greens: 31090,

	crazypeople: 11111

}

const seats = 420 // number of seats to be distributed

const opt = { // options, can be null

	draw: false // if a draw would be necessary to determine the seat count (e.g. 11 seats and two parties with 100 votes each), the library will throw an error, unless you set draw: true, in which case it will assert the ambiguous seat(s) randomly

}

const parliament = sainteLague(electionResults, seats, opt)

```

The `parliament` variable will look like this:

```json

{

	"socialists": 178,

	"conservatives": 139,

	"liberals": 46,

	"greens": 42,

	"crazypeople": 15

}

```

## Similar Projects

- [hare-niemeyer](https://github.com/juliuste/hare-niemeyer) - Hare-Niemeyer / Hamilton / largest remainder method

- [DHondt](https://github.com/economia/DHondt) – D'Hondt method

## Contributing

If you found a bug or want to propose a feature, feel free to visit [the issues page](https://github.com/juliuste/sainte-lague/issues).