What this office is
Each state elects two U.S. senators. A senator’s term is six years. Class 2 seats are on the regular 2026 cycle. The Senate writes and votes on federal legislation, confirms many presidential nominees, and tries impeachments. The winner of a November general election takes office only after the state’s official canvass and the new Congress is seated.
Why it matters in 2026
The Class II page places this seat among terms that expire in 2027. A Secretary of State update says this U.S. Senate race will be conducted by ranked choice because declared write-in candidates filed. This site does not tabulate rankings and does not call the race.
The U.S. Senate Class II page lists Collins, Susan M. (R-ME), as a senator whose term expires in 2027. The general-election candidate list names Susan M. Collins.
Printed names and order follow the general-election candidate list posted July 27, 2026. Party words Republican and Democratic are the words on the Secretary of State’s official sample ballot for this contest. The September 22, 2026 withdrawals list records Graham C. Platner as withdrawn from this office and Troy D. Jackson as the replacement; the general-election list names Jackson, not Platner. A separate declared write-in list is posted by the Secretary of State. Those write-in names are not repeated here. The official sample ballot shows a write-in line.
Candidates
Names below are the candidates on the official general-election list cited on this page, in that list’s order. Party labels are the labels on that list. This is not an endorsement, not a vote total, and not a call of the race.
Susan M. Collins
Republican · Incumbent
The general-election candidate list names Susan M. Collins for U.S. Senator with party code R. The official sample ballot prints Republican. The Class II page lists Collins, Susan M. (R-ME).
Read more:General-election candidate list
- Source: Maine Secretary of State, 2026 general election candidate list (Excel, posted July 27, 2026, 5:00 p.m.) · accessed October 15, 2026
- Source: Maine Secretary of State, official sample ballot, general election, November 3, 2026 · accessed October 15, 2026
- Source: U.S. Senate, Class II — terms expiring in 2027 · accessed October 15, 2026
Troy D. Jackson
Democratic
The September 22, 2026 withdrawals list records Graham C. Platner as withdrawn and Troy D. Jackson as the replacement candidate.
The general-election candidate list names Troy D. Jackson for U.S. Senator with party code D. The official sample ballot prints Democratic.
Read more:General-election candidate listWithdrawals and replacements
- Source: Maine Secretary of State, 2026 general election candidate list (Excel, posted July 27, 2026, 5:00 p.m.) · accessed October 15, 2026
- Source: Maine Secretary of State, candidate withdrawals and replacement nominations, updated September 22, 2026 · accessed October 15, 2026
- Source: Maine Secretary of State, official sample ballot, general election, November 3, 2026 · accessed October 15, 2026