42% — Will Brazil Union win the 2026 Brazilian Senate election
Kalshi 42% · 2 contracts · $7 volume · low confidence
Updated 2026-08-27 08:09:14 UTC

Why this matters:
This probability reflects market expectations that Brazil Union will finish among the top vote-getters in the 2026 Brazilian Senate election. At 30%, the market implies Brazil Union is a credible but not dominant force in the race. The current level reflects Brazil Union's existing political position and recent polling, though Senate elections involve multiple parties competing for seats across state-level races. The probability could shift based on changes in party leadership, coalition agreements, or shifts in voter preferences captured by polling. The 2026 Senate election itself, scheduled for early October 2026, will definitively resolve whether Brazil Union achieves the vote share needed to be among top performers.

Key factors:
- Brazil Union's current polling average and historical performance in recent Brazilian elections relative to competitors
- Coalition formation dynamics and whether Brazil Union enters into strategic alliances that affect vote distribution
- Changes in party leadership, candidate quality, or public scandals affecting party favorability
- Liberal Party's dominant market position (82¢) suggests consolidated expectation that a major party outperforms Brazil Union
- Actual election results in early October 2026 will provide definitive measurement of Brazil Union's vote share and seat allocation

Contracts:
- Will Liberal Party win the 2026 Brazilian Senate election?: Liberal Party — 75¢ Kalshi $7 (weight 100%)
- Will Brazilian Democratic Movement win the 2026 Brazilian Senate election?: Brazilian Democratic Movement — 8¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-08-27T07:21:47.918Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "42% per prediction markets (SimpleFunctions, August 2026)"
Canonical: https://simplefunctions.dev/answer/brazilsenate
Full data: https://simplefunctions.dev/api/public/query?q=Will%20Brazil%20Union%20win%20the%202026%20Brazilian%20Senate%20election
Provider: SimpleFunctions — https://simplefunctions.dev