Important information: This market will resolve after a consensus of Designated Media Sources have called the winner of the Maine Democratic Senate primary, scheduled for June 9, 2026. See full rules for details.
Maine Democratic Senate nominee?
Maine Democratic Senate nominee?
Graham Platner
Yes
Graham Platner
Yes
David Costello
No
David Costello
No
Janet Mills
No
Janet Mills
No
6 more
Race Intel
CandidateRaisedSmall Donors
- Graham PlatnerDem$12M64%$12M raised·64% small donors
- Janet Trafton MillsDem$5.4M31%$5.4M raised·31% small donors
Graham Platner
Odds
0% chanceMax payout
$0
Primary Elections
United States 2026
Primary Elections
United States 20262026 Primary Elections