Brazil Chamber of Deputies election 2018 — Results
Election day: October 7, 2018
- PT: 10.30%, 56 seats
- PSL: 11.65%, 52 seats
- PP: 5.57%, 37 seats
- PSD: 5.85%, 34 seats
- MDB: 5.53%, 34 seats
- PR: 5.31%, 33 seats
- PSB: 5.48%, 32 seats
- PRB: 5.08%, 30 seats
About this election
The voting system
The Chamber of Deputies has 513 members elected for four-year terms by open-list proportional representation. Each of the 26 states and the Federal District is a single multi-member constituency, with seats apportioned by population (from a minimum of 8 to a maximum of 70 for São Paulo) and allocated among party lists and coalitions by an electoral quotient. Because voters rank individual candidates within open lists, and because Brazil has dozens of registered parties, the system produces an exceptionally large and splintered chamber in which no party holds anything close to a majority.
Compiled and reviewed from official results by ElectioMap. See our data methodology.
In numbers
- -19.64 points separated PT from Outros.
- PT converted 10.30% of the vote into 56 of 513 seats (10.92%), 0.62 points more than its vote share.
- The top two shared 41.59% of the vote between them, and 10 lists cleared 5%.
Calculated from the official figures on this page and from the other elections of this type in our archive.
Understanding this election
- Why Turnout Figures Disagree — why two sources publish different turnout for one election
- D’Hondt vs Sainte-Laguë — how a divisor formula turns vote shares into seats
- How Electoral Systems Work Around the World — first-past-the-post, proportional and mixed systems, with real numbers