Polymarket
Piauí Senate Election: 1st Place
As of October 5, 2026, traders on Polymarket favor Marcelo Castro at 83%, ahead of Julio Cesar at 6%. $652 traded in the last 24 hours, $43K in all.
- Favorite
- Marcelo Castro 83%
- 24 hours
- up 22 pts
- Traded today
- $652
- Traded in all
- $43K
- Closes
- October 5, 2026
Every outcome (top 6 of 20)
- Marcelo Castro83%▲ 22
- Julio Cesar6%▼ 7
- Alexandre Mariano<1%
- Antônio Barros<1%
- Antônio José Lira<1%
- Ciro Nogueira<1%▼ 20
14 more outcomes, mostly long shots, are listed on Polymarket.
How the odds have moved
0%25%50%75%100%5:59 AM5:59 PM5:59 AM83% Marcelo Castro
The line follows the current favorite, Marcelo Castro. One reading an hour.
Embed these odds on your site
Paste this into any page. It updates every 10 minutes and links back here. Add ?theme=light or ?theme=dark to the address to fix the colors.
See this market on Polymarket →
More world politics markets
- Brazil Presidential ElectionFlávio Bolsonaro 81%
- Brazil Presidential election winner?Flávio Bolsonaro 82%
- Brazil presidential election: first round winner?Flávio Bolsonaro >99%
- Next French Presidential ElectionMarine Le Pen 45%
- Prime Minister of Israel after the next election?Gadi Eizenkot 46%
- Brazil Presidential Election First Round: Margin of VictoryFlávio Bolsonaro <5% >99%
- 2026 Nobel Peace Prize winnerSudan’s Emergency Response Rooms 14%
- US announces end of Iranian blockade by...?March 31 73%
Prices are Polymarket's own (displayed price), collected every 10 minutes. Research, not betting advice.
