Maine Senate
Primary: June 9, 2026
Primary Contests
Democratic Primary
Graham Platner
$12.0M raised
N/A
David Costello
$143K raised
N/A
Republican Primary
Susan Collins
Inc
$10.5M raised
F
Other Candidates
Phillip Rench
2020 Senate Results
Collins, Susan Margaret
vs51.0%
Gideon, Sara I.
42.4%
D+8.6
Candidate Details
Graham Platner
Democratic
Grade: N/A
2026 Fundraising$12.0M
Individuals
PACs
Susan Collins
Republican
Grade: F
2026 Fundraising$10.5M
Individuals
PACs
David Costello
Democratic
Grade: N/A
2026 Fundraising$143K
Individuals
Self
PR
Phillip Rench
IND
Grade: N/A
2026 Fundraising$55K
Individuals
Self