2024Final results
2024 election for U.S. Senate in Maine
U.S. Senate · Maine
Angus S. King, Jr. (Ind) won with 52.1% of the vote, defeating Demi Kouzounas (R) by 17.3 points.
Angus S. King, Jr.Independent · winner
52.1%424,490
Demi KouzounasRepublican
34.8%283,638
David Allen CostelloDemocrat
10.6%86,464
Jason S. CherryIndependent
2.5%20,046
814,638 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
Money in this race
Each line compares the two campaigns on one scale.
David Allen CostelloDemi Kouzounas
$111.3K
Raised by the campaign
$1M
$111.6K
Spent by the campaign
$1M
$0
Cash on hand
$0
Other candidates' campaigns: Angus S. King, Jr. $5.4M · Jason S. Cherry $110K.
Campaign money: FEC, through Dec 12, 2024; FEC, through Nov 30, 2024.
Source: FEC campaign filingsUpdated Dec 31, 2024
The candidates
Angus S. King, Jr. (I)Demi Kouzounas (R)David Allen Costello (D)
Also on the ballot: Jason S. Cherry (Independent), 2.5%