State Senate District 21
2021 planOne of Maine’s 35 State Senate districts, as drawn in the 2021 redistricting plan and in effect since the 2022 election. It takes in 1 place. Represented by Margaret "Peggy" R. Rotundo.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoState Senate District 21’s vote. Click a question for the statewide comparison.How State Senate District 21 Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently State Senate District 21 votes from the state.
Turnout in general elections
Ballots cast divided by active registered voters on election day. List maintenance shrinks the denominator in some years (for example 2022), which pushes the rate up.
Who Lives Here
American Community Survey 2020–2024State Senate District 21 at a Glance
State Senate District 21 is one of Maine’s 35 State Senate districts, as drawn in the 2021 redistricting plan and in effect since the 2022 election. Its population was 38,324 in the 2020 Census.
It takes in Lewiston. It is represented in the Maine Senate by Sen. Margaret "Peggy" R. Rotundo (D-Lewiston).
In the 2024 presidential race, Kamala Harris carried the district with 52.9% to 44.7% for Donald Trump. That was a Democratic margin of 8.2 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried the district with 57.6% to 40.6% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried the district with 52.9% to 31.8% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 11th most Democratic of 35 State Senate districts.
As of March 7, 2026, State Senate District 21 had 18,781 active registered voters: 37.2% Democrats, 25.2% Republicans, 30.2% unenrolled, 4% Green Independents, and 3.5% Libertarians. The median household income is $55,393 and the median home value $235,100, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1868, voter registration since 1954, referendum votes, turnout, and Census and American Community Survey figures. Sources are listed at the foot of the page and on the Data Sources page.