Kalshi2026 Senate

Maine Senate Race 2026

Kalshi has 8 events on the 2026 Maine Senate race, with $31,521,642 in lifetime volume across 64 contracts. On the “Maine Senate winner?” market the implied probability is 69% for the Democratic party and 32% for the Republican party, based on each contract's trading range on Sep 24, 2026. “Maine Democratic Senate nominee on Jul 31, 2026?” settled Yes on Troy Jackson.

Lifetime volume

$31,521,642

Contracts

Kalshi events

Highest implied

69%

Democratic party

Maine Senate winner?

SENATEME-26OpenVolume $6,686,456Event page Series hub

Republican party

32% $3,494,621

Democratic party

69% $3,191,836

Implied probability: midpoint of each contract's trading range on Sep 24, 2026.

Maine Senate winner? (Person)

KXMESENATEPERSON-26OpenVolume $2,639,943Event page Series hub

Susan CollinsRep

33% $789,451

Troy JacksonDem

68% $640,089

Graham PlatnerDem

<1% $363,739

Nirav ShahDem

<1% $183,144

Shenna BellowsDem

<1% $121,715

Dan KlebanDem

<1% $109,284

Janet MillsDem

<1% $104,208

Jared GoldenDem

<1% $80,496

Valli GeigerDem

<1% $65,982

Patrick Dempsey

<1% $65,097

Sara GideonDem

<1% $38,057

Mattie DaughtreyDem

<1% $28,746

Brian Bryant

<1% $26,368

Angus King IIIDem

<1% $15,699

Stephen King

<1% $7,869

Implied probability: midpoint of each contract's trading range on Sep 24, 2026.

Will Graham Platner drop out?

KXPLATNERDROPOUT-26OpenVolume $10,889,745Event page Series hub

Yes

$5,460,742

Before Jul 9, 2026

$2,360,956

Before Jul 8, 2026

$1,065,054

Before Jul 10, 2026

$785,533

Before Jul 11, 2026

$631,570

Before Jul 7, 2026Settled No

$312,547

Before Jul 13, 2026

$144,885

Before Jul 12, 2026

$128,458

Maine Democratic Senate nominee?

KXSENATEMED-26OpenVolume $6,220,691Event page Series hub

Graham Platner

$4,387,925

Janet Mills

$1,459,633

David Costello

$113,904

Jared Golden

$105,551

Chellie Pingree

$81,945

Troy Jackson

$42,449

Jordan Wood

$15,677

Dan Kleban

$7,468

Andrea LaFlamme

$6,139

Maine Democratic Senate nominee on Jul 31, 2026?

KXMEDNOMJUL-26AUG01SettledVolume $4,247,515Event page Series hub

Troy JacksonSettled Yes

$1,169,786

Graham PlatnerSettled No

$818,631

Nirav ShahSettled No

$550,337

Shenna BellowsSettled No

$411,999

Janet MillsSettled No

$200,903

Dan KlebanSettled No

$190,221

Jordan WoodSettled No

$178,970

Sara GideonSettled No

$172,321

Valli GeigerSettled No

$142,399

No oneSettled No

$122,185

Jared GoldenSettled No

$81,849

Patrick DempseySettled No

$71,760

Aaron FreySettled No

$46,631

Emily CainSettled No

$27,487

Mattie DaughtreySettled No

$25,970

Brian BryantSettled No

$12,374

Ashley WebbSettled No

$11,693

Chellie PingreeSettled No

$8,610

Elizabeth DickersonSettled No

$1,538

David CostelloSettled No

$1,045

Paige LoudSettled No

$807

How will the Maine Democratic Senate nomination be decided?

KXPLATNERREPLACE-26SettledVolume $747,717Event page Series hub

Platner remains nomineeSettled No

$516,018

Special conventionSettled Yes

$77,108

Statewide caucusesSettled No

$60,279

State committeeSettled No

$46,747

Another processSettled No

$31,869

Platner drops out with no replacementSettled No

$15,697

Maine Republican Senate nominee?

KXSENATEMER-26OpenVolume $52,050Event page Series hub

Susan Collins

$46,721

Dan Smeriglio

$5,329

Will Graham Platner drop out this year?

KXPLATNERDROPOUT-26JAN01SettledVolume $37,524Event page Series hub

Before Jan 1, 2026Settled No

$37,524