Corrente da Virada – A Campaign Chain for Brazil's Runoff
What It Is
Corrente da Virada ("the turnaround chain") ran for the 13 days before the October 25, 2026 runoff. The idea was person-to-person reach: you joined the chain, got a numbered link and ready-made art for Instagram and WhatsApp, and asked three people to join after you. Around the chain sat everything a volunteer needed to talk to an undecided voter: short answers with sources, a state-by-state comparison, a fact-check timeline, debunked AI fakes, two small games and a kit of shareable material. After the election the site was frozen as a static archive with a thank-you and the final numbers on top.
Features
The chain: join, get a numbered link and share art, pass it to three people
Network of local initiatives and an event agenda
Short answers to common arguments, each with a source and a ready-to-send message
Comparison tool with first-round results by state
Fact-check timeline and a gallery of AI-generated fakes debunked by fact-checking agencies
Two browser games, including the Vira-Voto Simulator
Kit of art, stickers and ready-made texts to share
Technical Highlights
Lean by Design
A static site in plain JavaScript with hash routing and no framework, served from Vercel's São Paulo region so it stayed fast on any phone.
Abuse-Resistant Sign-Up
During the campaign, joining went through a Supabase edge function with Cloudflare Turnstile and per-IP rate limits.
AI Routines Behind the Content
18 scheduled Claude routines produced and published fact-checks and daily content to the database, which the site read with versioned caching.
Frozen Into an Archive
After the runoff, an export script wrote every database read to static JSON and downloaded the images it referenced, so the archive runs with no backend at all.
Key Features
PROJECT TYPE: Volunteer campaign site, now an archive
DURATION: 13 days, October 13 to 25, 2026
REACH: 59,556 people joined the chain
MECHANIC: Each person invites three more
CONTENT: 53 hoaxes debunked, 46 debate claims checked
STACK: Vanilla JS, Supabase, Vercel, Claude routines
Results
59,556 people joined the chain in 13 days, 52,759 of them through an invite.
The longest chain reached 46 people in a row, and the record day brought 17,173 new links.
About 225,000 visits and 368,000 pageviews over the campaign (Cloudflare Web Analytics, visits are not unique people), with 178,668 invites requested.
Debunked 53 hoaxes and fact-checked, with video, 46 claims Flávio Bolsonaro made in the debates: 25 false and 21 misleading.
Published the Vira-Voto game with 72 sourced facts, 134 public endorsements and 51 shareable pieces, kept up by 18 automated routines.