Chamber Relator Advances Single‑Vote Mixed‑District Plan and Eyes November Vote

Overview

• On Monday Relator Domingos Neto publicly presented a draft that makes the voter cast a single ballot that elects a district candidate and also counts toward the party’s proportional allocation.
• The text sets objective district rules using IBGE census data, requires contiguous districts that respect municipal borders and limits population variance to roughly 5%–10% to reduce gerrymandering risks.
• The proposal would be enacted gradually with municipal tests in 2032 and full use in 2034 while the rule for the 2030 transition remains unresolved and still under negotiation.
• Backers in PSD and allies including Chamber President Hugo Motta are racing to turn the package into a PEC this month but the change needs two‑thirds majorities in each house, making broad party deals essential and leaving PL and PT as prominent opponents.
• Key implementation details such as internal party democracy, campaign funding, replacement rules and list order mechanics are deferred to later lawmaking, and the plan limits the mixed model to cities with over 200,000 voters so most municipalities would keep the current system.