U.S. Senate elections in Maine
● In officeSusan Margaret CollinsRepublicanAngus S. King Jr.Independent
Elections won
R 27 · D 7 · Other 337 Senate elections since 1916
Last decided by
17.0 pts2024, Angus S. King Jr. over Demi Kouzounas
Closest ever
0.43 pts1934, Frederick Hale over F. Harold Dubord
Longest streak
14 in a rowRepublican, 1916–1954
Next election
2026Tuesday, November 3, 2026
Maine's U.S. Senate seats are held by Republican Susan Margaret Collins and independent Angus S. King Jr.; King Jr. won the most recent race by 17.0 points in 2024. Collins has held one seat since 1996 and King Jr. the other since 2012. The 2024 race put King Jr. ahead of Demi Kouzounas, 17.0 points clear. Across 37 elections since 1916, Republicans have won 27 and Democrats 7, with 3 going to other parties. Of those, the closest was 1934, decided by 0.43 points; the widest 1988, by 62.6 points.
Angus S. King Jr. I 427,570 · Demi Kouzounas R 284,434 · David Allen Costello D 88,875 · Jason S. Cherry I 20,193
Susan Margaret Collins R 417,645 · Sara I. Gideon D 347,223 · Lisa Savage I 40,579 · Max Patrick Linn I 13,508
Susan Margaret Collins R 413,505 · Shenna Bellows D 190,254
Angus S. King Jr. I 370,580 · Charles E. Summers Jr. R 215,399 · Cynthia Ann Dill D 92,900 · Stephen M. Woods 10,289 · +2 more
Susan Margaret Collins R 444,300 · Thomas H. Allen D 279,510
Susan Margaret Collins R 295,041 · Chellie Pingree D 209,858
Olympia J. Snowe R 437,689 · Mark W. Lawrence D 197,183
Susan Margaret Collins R 298,422 · Joseph E. Brennan D 266,226 · John C. Rensenbrink I 23,441 · William P. Clarke U 18,618
William S. Cohen R 319,167 · Neil Rolde D 201,053
George J. Mitchell D 452,581 · Jasper S. Wyman R 104,164
George J. Mitchell D 279,819 · David F. Emery R 179,882
William S. Cohen R 212,294 · William D. Hathaway D 127,327 · Hayes E. Gahagan I 27,824 · John J. Jannace I 5,553 · +1 more
Edmund Muskie D 292,704 · Robert A. G. Monks R 193,489
William D. Hathaway D 224,270 · Margaret C. Smith R 197,040
Edmund Muskie D 199,954 · Neil S. Bishop R 123,906
Edmund Muskie D 253,511 · Clifford G. McIntire R 127,040
Margaret C. Smith R 256,890 · Lucia M. Corimer D 159,809
Edmund Muskie D 172,842 · Frederick G. Payne R 111,522
Margaret C. Smith R 144,530 · Paul A. Fullam D 102,075
Margaret C. Smith R 159,182 · Adrian H. Scolten D 64,074
Ralph O. Brewster R 111,215 · Peter M. Macdonald D 63,799
Wallace H. White R 111,520 · Fulton J. Redman D 55,754
Wallace H. White R 158,068 · Louis J. Brann D 153,420
Wallace H. White R 88,262 · Frank H. Haskell D 56,559
Frederick Hale R 145,501 · Herbert E. Holmes D 63,429
Bert M. Fernald R 148,783 · Fulton J. Redman D 97,428
Frederick Hale R 101,026 · Okley C. Curtis D 74,660
Bert M. Fernald R 67,431 · Earl E. Newbert D 54,289
Frederick Hale R 79,481 · Charles F. Johnson D 69,486 · James F. Carey S 1,510 · Arthur C. Jackson P 279