ElectoSIM: Electoral Simulator

eduardito.dev

About this app

Tiny ElectoSIM is a precise and customizable electoral calculator to simulate seat apportionment using the world's main electoral methods and formulas.

Designed for political scientists, journalists, students, and electoral system enthusiasts who need to project polls, analyze surveys, or compare how a parliament changes depending on the apportionment formula applied.

Main Features:

Multiple electoral methods: Simulates seat distributions using largest average systems (D'Hondt method, Sainte-Laguë/Webster, Imperiali) and largest remainder systems (Hare quota, Droop quota, Hagenbach-Bischoff quota).
Direct comparison of results: Instantly check how seat allocation varies when switching formulas with the same vote counts.
Quick seat calculation: Enter the number of votes or vote percentages by party and get the result in real time.
Configurable electoral threshold: Set the minimum legal voting requirement (3%, 5%, or custom) to filter candidates without representation.
Fully customizable: Add as many candidates as you need, assign names, corporate colors, and set the total number of seats to distribute.
Clear graphics and diagrams: Visualize the chamber or assembly distribution intuitively.
Fast and lightweight: Direct single-constituency tool, ideal for quick calculations and political education.

Ideal for:

Studying and comparing the behavior of electoral formulas and vote proportionality.
Projecting results from municipal, regional, national, or European elections.
Simulating surveys, voting intention polls, and electoral tracking.
Calculating how many votes a candidate needs to obtain or compete for the last seat.

Check the real impact of each electoral system and make your estimates with ElectoSIM.

What’s new

Added multilingual support