The Prediction Markets

Market comparison

Prime Minister of Greece after the next election?

2 venues · 37 outcome rows · 6 comparable lines · event identity linked · 0 verified parity · active

Polymarket

Open venue ↗

61 outcomes · $33K reported volume

Observed 2m ago

Recorded venue end date: Jul 26, 2027

9 outcomes · $12K reported volume

Observed 27s ago

Recorded venue end date: Jul 25, 2028

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These venues also report end dates more than 48 hours apart; event identity does not mean the contracts close or settle together. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

Known rule differences between venues

  • Deadlines differ: Kalshi needs the person to take office and meet constitutional requirements before its own date (e.g. Oct 27, 2027 for Israel); Polymarket waits for a swearing-in until its date (e.g. Dec 31, 2027), then resolves to 'Other'. A government formed between the two dates splits them.
  • Kalshi counts becoming Prime Minister 'as a result of government formation' after the election; Polymarket requires a formal swearing-in (some events: a confidence vote) and excludes interim or caretaker leaders. An incumbent staying on as caretaker is No on both until a new government forms.
  • If an early election is called, Polymarket resolves on that election; Kalshi's 'next election' wording does the same, but its stated-year events (e.g. 'after the 2026 election') may not.

A shared identity alone does not make a price difference executable.

Alexis Tsipras

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

8.3%

Bid 7.2% · Ask 9.5%

Alexis Tsipras

Open Polymarket ↗

Kalshi

4.0%

Bid 4.0% · Ask 12.0%

Alexis Tsipras

Open Kalshi ↗

Price difference 4.4 pp

Kyriakos Mitsotakis

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

65.0%

Bid 64.0% · Ask 66.0%

Kyriakos Mitsotakis

Open Polymarket ↗

Kalshi

73.0%

Bid 70.0% · Ask 78.0%

Kyriakos Mitsotakis

Open Kalshi ↗

Price difference 8.0 pp

Kyriakos Velopoulos

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

5.7%

Bid 1.0% · Ask 10.4%

Kyriakos Velopoulos

Open Polymarket ↗

Kalshi

2.0%

Bid 1.0% · Ask 5.0%

Kyriakos Velopoulos

Open Kalshi ↗

Price difference 3.7 pp

Maria Karystianou

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

1.3%

Bid 0.8% · Ask 1.7%

Maria Karystianou

Open Polymarket ↗

Kalshi

2.0%

Bid 1.0% · Ask 7.0%

Maria Karystianou

Open Kalshi ↗

Price difference 0.8 pp

Nikos Androulakis

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

7.8%

Bid 1.6% · Ask 13.9%

Nikos Androulakis

Open Polymarket ↗

Kalshi

2.0%

Bid 1.0% · Ask 5.0%

Nikos Androulakis

Open Kalshi ↗

Price difference 5.8 pp

Zoe Konstantopoulou

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

1.7%

Bid 1.3% · Ask 2.0%

Zoe Konstantopoulou

Open Polymarket ↗

Kalshi

1.0%

Bid 0.0% · Ask 6.0%

Zoe Konstantopoulou

Open Kalshi ↗

Price difference 0.7 pp

Afroditi Latinopoulou

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

1.6%

Bid 1.2% · Ask 2.0%

Afroditi Latinopoulou

Open Polymarket ↗

Kalshi

—

Dimitris Koutsoumbas

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

2.2%

Bid 1.1% · Ask 3.3%

Dimitris Koutsoumbas

Open Polymarket ↗

Kalshi

—

Giannis Antetokounmpo

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

1.8%

Bid 1.5% · Ask 2.2%

Giannis Antetokounmpo

Open Polymarket ↗

Kalshi

—

Kostis Hatzidakis

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

2.0%

Bid 1.0% · Ask 6.0%

Kostis Hatzidakis

Open Kalshi ↗

Kyriakos Pierrakakis

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

2.0%

Bid 1.0% · Ask 6.0%

Kyriakos Pierrakakis

Open Kalshi ↗

Nikos Dendias

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

2.0%

Bid 1.0% · Ask 5.0%

Nikos Dendias

Open Kalshi ↗

Person AA

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AA · closed

Open Polymarket ↗

Kalshi

—

Person AB

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AB · closed

Open Polymarket ↗

Kalshi

—

Person AC

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AC · closed

Open Polymarket ↗

Kalshi

—

Person AD

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AD · closed

Open Polymarket ↗

Kalshi

—

Person AE

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AE · closed

Open Polymarket ↗

Kalshi

—

Person AF

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AF · closed

Open Polymarket ↗

Kalshi

—

Person AG

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AG · closed

Open Polymarket ↗

Kalshi

—

Person AH

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AH · closed

Open Polymarket ↗

Kalshi

—

Person AI

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AI · closed

Open Polymarket ↗

Kalshi

—

Person AJ

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AJ · closed

Open Polymarket ↗

Kalshi

—

Person AK

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AK · closed

Open Polymarket ↗

Kalshi

—

Person AL

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AL · closed

Open Polymarket ↗

Kalshi

—

Person AM

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AM · closed

Open Polymarket ↗

Kalshi

—

Person AN

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AN · closed

Open Polymarket ↗

Kalshi

—

Person AO

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AO · closed

Open Polymarket ↗

Kalshi

—

Person AP

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AP · closed

Open Polymarket ↗

Kalshi

—

Person AQ

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AQ · closed

Open Polymarket ↗

Kalshi

—

Person AR

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AR · closed

Open Polymarket ↗

Kalshi

—

Person AS

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AS · closed

Open Polymarket ↗

Kalshi

—

Person AT

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AT · closed

Open Polymarket ↗

Kalshi

—

Person AU

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AU · closed

Open Polymarket ↗

Kalshi

—

Person AV

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AV · closed

Open Polymarket ↗

Kalshi

—

Person AW

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid 0.0% · Ask 100.0%

Person AW · closed

Open Polymarket ↗

Kalshi

—

Stefanos Kasselakis

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

1.7%

Bid 1.1% · Ask 2.3%

Stefanos Kasselakis

Open Polymarket ↗

Kalshi

—

Yanis Varoufakis

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

1.1%

Bid 1.0% · Ask 1.2%

Yanis Varoufakis

Open Polymarket ↗

Kalshi

—

Prices are shown as percentages of a $1 payout. “pp” means percentage points. A dash means data is unavailable.