Maine Senate race set between Democrat Graham Platner and GOP Sen. Susan Collins

Politics Maine Senate race set between Democrat Graham Platner and longtime GOP Sen. Susan Collins By Kaia Hubbard Kaia Hubbard Politics Reporter Kaia Hubbard is a politics reporter for CBS News Digital, based in Washington, D.C. Read Full Bio Kaia Hubbard June 9, 2026 / 9:27 PM EDT / CBS News Add CBS News on Google Washington  — Democrat Graham Platner and GOP Sen. Susan Collins will face off in November, after Platner won his primary on Tuesday night, CBS News projects.Collins was unopposed in Tuesday's Republican primary. This is a breaking story; it will be updated. .component--type-recirculation { .item:nth-child(7), .card-recirc:nth-child(7) { display: none; } } #inline-recirc-item--id-f5fe699e-67fc-4f13-8719-778a9c04d403, #right-rail-recirc-item--id-f5fe699e-67fc-4f13-8719-778a9c04d403 { display: none; } #inline-recirc-item--id-f5fe699e-67fc-4f13-8719-778a9c04d403 ~ .item:nth-child(7) { display: block; } © 2026 CBS Interactive Inc. All Rights Reserved.