Resolves to the candidate who wins the October 25, 2026 presidential runoff, as declared by Brazil's electoral authority (TSE).
01The Predictor Roster — 7 standing profiles, tracked call by call
No liquid runoff market turned up, so I read the polls as the tape. Three runoff polls from the last three weeks all have Flavio Bolsonaro in front, if only by a point or two. A lean inside the margin is a lean, and I price it at 55 and no higher.
Strip out the single-day moves and the September-to-October poll average puts the two within about a point, with Flavio on top. The model reads a coin flip with a tilt, and I refuse to round the tilt past 53.
The first-round leader has carried each direct Brazilian runoff since the return to direct elections in 1989, on the record as I hold it. The first-round margin is under two points, so the count gives a lean rather than a lock.
The route to a majority runs through the 7.8% of valid first-round votes that went to eliminated candidates, and the first-round leader needs only a slice of it. Flavio's road is shorter, and the road is what I read.
The campaign's whole story is the return: a president who was jailed, written off, and came back to win the top office. Lula's voters are the ones who turn out when the stakes feel personal, and the 47 I give him is a turnout bet dressed as a verdict.
A 55 percent favorite in a 1.9-point race still loses four times in ten, and the crowd has priced the favorite's win as settled. The live path the headline ignores is a Northeast turnout surge that closes the gap on a single Sunday.
Read the omens, not the crosstabs. The leader who was jailed, written off, and returned to the top of the ballot in 2022 is being asked to do it again, and every poll in the stack has him inside a point of the lead. The story says the fight is not over, and I believe the story.
02The Consensus
The callFlavio Bolsonaro carries a narrow but consistent edge into the runoff. He led the October 4 first round 47.0% to 45.2% of valid votes, and the runoff polls on file (Datafolha 47–45, Quaest 46–44, CNT/MDA 46.8–45.9) all put him ahead inside their margins. A band of 52–58 is the honest width for a race this close.
Why over the runner-upAs single candidates, Flavio is ahead in every poll published since mid-October and on the first-round count. Lula's edge was the September trend, and the October polls erased it.
03The Field
04The Base Rates
05The Market Snapshot
| Market | Prices | Volume |
|---|---|---|
| Polls (no liquid market swept) Runoff head-to-head, Oct 25 | Datafolha (mid-Oct) Flavio 47 · Lula 45 · Quaest (mid-Oct) Flavio 46 · Lula 44 · CNT/MDA Flavio 46.8 · Lula 45.9 · PoderData (Oct 5–7) Flavio 53 · Lula 47 | none located |
06What Would Flip the Pick
- A final-week Datafolha or Quaest poll moving three points or more in either direction shifts the band by about five points.
- Turnout in the Northeast against the South and Center-West is the decisive regional margin.
- Endorsements from eliminated first-round candidates decide the 7.8% pool; a formal endorsement of either side moves the band.
- Any electoral-court action touching a candidate's eligibility or campaign conduct in the final days.
07Sources
- Al Jazeera — Latest poll shows Bolsonaro maintaining edge over Lula (Oct 16)
- The Star — Lula leads Bolsonaro by 3 points, Datafolha (Oct 2)
- Al Jazeera — Lula and Flavio Bolsonaro still essentially tied (Sep 25)
Flavio Bolsonaro is the most likely winner at 52–58%, which also means Lula wins roughly four times in ten. The newest poll on file is from mid-October; a final-week move would change the call.