Senát 2026 · forecast

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District 27 — Praha 1

open seat (Němcová not running)  As of 2026-10-09 · Stage: blind (no odds) · v1

Round-1 result

counted 100 % · Source: ČSÚ (volbyhned.cz)

CandidateParty / backingVotesShare
Jiří PadevětODSSTANPirátTOP17 57649.64 %
Jan ČižinskýKDU+Zel+PHASOBĚ9 82427.74 %
Ján DudraANO4 32912.22 %
Jan ČižinskýLevice1 0282.90 %
Jiří Pavel PešekŠvýcarská dem.9292.62 %
Jiří MorštadtGenerace5971.68 %
Vojtěch RyvolaGEN4901.38 %
Jan ŠternTEAM3470.98 %
Vladimír KolmanSOCDEM2860.80 %

Round-2 forecasts (16–17 Oct)

Probability of winning the runoff. Scored separately from the freeze; the freeze (9 Oct) is scored on the final winner.

CandidateAIStatistical modelAI + modelBettingAI + bettingSTEM (CNN Prima)Seznam Zprávy
Jiří Padevět93 %95 %94 %——99 %98 %
Jan Čižinský7 %5 %6 %——1 %2 %

AI: v2 · AI + model: v2 · Odds contamination risk: none

Before the election — scored freeze (9 Oct)

CandidateAIStatistical modelAI + modelBettingAI + betting
Jan Čižinský54 %14 %27 %42 %38 %
Jiří Padevět43 %70 %70 %46 %55 %
Ján Dudra2 %2 %2 %6 %4 %
Others1 %14 %1 %5 %3 %

AI agent (blind) — Before the election — scored freeze (9 Oct)

CandidateParty / backingP(win)Band
Jan ČižinskýKDU+Zel+PHASOBĚ (navrhl/a PRAHA SOBĚ)54 %37–71 %
Jiří PadevětODSSTANPirátTOP (navrhl/a STAN)43 %27–59 %
Ján DudraANO2 %1–5 %
Others1 %0–3 %

Other candidates on the ballot: Jiří Morštadt (Generace), Pavel Čižinský (Levice), Jan Štern (TEAM), Vojtěch Ryvola (GEN), Jiří Pavel Pešek (Švýcarská dem.), Vladimír Kolman (SOCDEM). Candidates and lists per the official ČSÚ register (volby.gov.cz).

AI agent (blind) vs. Statistical model

CandidateParty / backingAI agent (blind)Statistical modelRound-1 share (model, 80% interval)P(advance / win round 1)
Jiří PadevětODSSTANPirátTOP43 %70 %42 % (34–50)100 %
Jan ČižinskýKDU+Zel+PHASOBĚ54 %14 %23 % (17–29)86 %
Jiří MorštadtGeneracein “others”2 %5 % (0–10)0.4 %
Pavel ČižinskýLevicein “others”2 %5 % (0–10)0.3 %
Jan ŠternTEAMin “others”2 %4 % (0–10)0.3 %
Vojtěch RyvolaGENin “others”2 %4 % (0–10)0.4 %
Ján DudraANO2 %2 %8 % (1–14)2 %
Jiří Pavel PešekŠvýcarská dem.in “others”2 %5 % (0–10)0.4 %
Vladimír KolmanSOCDEMin “others”2 %4 % (0–10)0.4 %

AI agent (blind) — Others: 1 %. The model cannot see candidates with neither party nor municipal base (new movements, personal brand) — it underrates them. Model →

Why

Two strong candidates; Čižinský has a strong base in Praha 7. The lead flipped after the red-team (from 48–49).

What to watch

Whoever leads round 1 gets ~70 %. Praha 7 vs. Praha 1 margins.

Run limitations