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● InformationalElections / Campaigns

Democrat Graham Platner will try to unseat GOP Sen. Susan Collins in a critical Senate matchup

Collins will face Platner after he won the Democratic primary.

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This article1 analysis · Oct 5, 2026

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Jun 9, 2026
tl;dr

Graham Platner won Maine’s Democratic Senate primary, setting up a November race against Republican Sen. Susan Collins. The contest is a major opportunity for Democrats seeking to gain control of the Senate.

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Susan M. Collins R · ME · SEN
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This story reports what happened without casting Collins in a good or bad light, so readers don’t rate it and it doesn’t count toward Collins’s record.

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Susan M. Collins
R · ME · SEN

Republican senator and general-election opponent

PRIMARY SUBJECT

Democratic Senate nominee challenging Susan Collins

Platner's version of this story ↗
Nirav Shah
D · ME

Maine gubernatorial candidate and former state public health director

Former Maine governor and Republican candidate for the 2nd Congressional District

Donald Trump
R · President of the United States

Republican presidential candidate in the comparison of Maine’s 2024 vote

Democratic candidate in Maine’s 2nd Congressional District primary

Maine gubernatorial candidate

Bernie Sanders
I · VT · SEN

Senator who supported Platner early in his campaign

Democratic candidate in Maine’s 2nd Congressional District primary

Democratic candidate in Maine’s 2nd Congressional District primary

Kamala Harris
Former U.S. Senator (D-CA)

Democratic presidential candidate in the comparison of Maine’s 2024 vote

Maine gubernatorial candidate and former state Senate president

Paige Loud
D · ME

Democratic candidate in Maine’s 2nd Congressional District primary

Maine governor who withdrew from the Senate race

ALSO MENTIONED  Angus King III, Energy executive and Maine gubernatorial candidate; Ben Midgley, Business owner and Republican candidate for Maine governor; Bobby Charles, Republican candidate for Maine governor; David Jones, Business owner and Republican candidate for Maine governor; Garrett Mason, Republican candidate for Maine governor and former state Senate majority leader; Hannah Pingree, Maine gubernatorial candidate and former Maine House speaker; Jonathan Bush, Republican candidate for Maine governor; Owen McCarthy, Republican candidate for Maine governor; Robert Wessels, Republican candidate for Maine governor

Part of a bigger story

26 OUTLETS
Graham Platner Wins Maine Democratic Senate Primary

Graham Platner won Maine’s Democratic Senate primary, setting up a general-election contest against Republican Sen. Susan Collins. Left-leaning outlets frame Platner as an outsider challenging Collins’s establishment ties and consider his chances despite campaign controversy. Center outlets present a high-stakes matchup, covering its implications for Senate control alongside scrutiny of Platner’s past. Right-leaning outlets emphasize Platner’s vulnerabilities and how Collins might campaign against him.

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