Maine US Senate Primary Super Tight According to the Odds: Janet Mills vs. Graham Platner

One of the most hotly contested Senate races in the US is taking place with the Maine Primary.

While current governor Janet Mills is the -140 favorite, Graham Platner pays even odds. 

“A competitive primary is a healthy process," Mills stated. 

Platner is an American oyster farmer and political candidate from Maine who is very much in the mold of a Zohran Mamdani in terms of grassroots popularity with nominal political experience.

But unlike Mandani who is facing an unpopular former Governor, Mills still has significant support among Maine's voting population. 

“Maine voters know that the establishment we have in this country has not represented their interests," Platner said. 

More Election Betting Odds

Here’s a final update from the oddsmakers at BetOnline.ag as to what they are projecting for Election Day on November 4. 

There have been some interesting movements for the key races, which you can find below. 

 As always, the favorites are listed at the top (or with a minus sign in front of name), while the underdogs are below with plus signs in front of their names. 

Albuquerque Mayoral Election - Tim Keller Margin of Victory

Over/Under 34.5%

Annapolis Mayoral Election - Jared Littman Margin of Victory

Over/Under 42.5%

Buffalo Mayoral Election - Sean Ryan Margin of Victory

Over/Under 59.5%

Charlotte Mayoral Election - Vi Lyles Margin of Victory

Over/Under 57.5%

Cincinnati Mayor - Aftab Pureval Margin of Victory

Over/Under 62.5%

Cleveland Mayoral Election - Justin Bibb Margin of Victory

Over/Under 31.5%

Detroit Mayoral Election - Mary Sheffield Margin of Victory

Over/Under 62.5%

Pittsburgh Mayoral Election - Corey O'Connor Margin of Victory

Over/Under 44.5%

Topeka Mayoral Election - Spencer Duncan Margin of Victory

Over/Under 54.5%

Will Proposition 50 on California ballot pass? (Legislature-drawn congressional district map for 2026-2030)

Yes -1500

No +600

(Note: Odds last week were Yes -225, No +160 so they've moved heavily. Current odds equate to a 93.8% probability measure will pass.)

Will Question 2 on Maine ballot pass? (Restrict a person’s access to dangerous weapons, ERPO)

Yes +135

No -175

(Note: No change since last week. Odds equate to a 42.6% implied probability measure will pass)

Will Proposal 1 on New York ballot pass? (Allow park forest preserve acres for ski sports)

Yes -4000

No +1000

(Note: No change since last week. Odds equate to a 97.6% implied probability measure will pass)

Will Proposition 16 on Texas ballot pass? (Non-citizens voting rights)

Yes -5000

No +1200

(Note: No change since last week. Odds equate to a 98% implied probability measure will pass)

Will Proposition 2 on Texas ballot pass? (No capital gains tax)

Yes -1500

No +600

(Note: No change since last week. Odds equate to a 93.8% implied probability measure will pass)

TC Jackson, Gambling911.com