| Type: | parliamentary |
| Previous Election: | 2017 Tønder Municipal election |
| Previous Year: | 2017 |
| Next Election: | 2025 Tønder Municipal election |
| Next Year: | 2025 |
| Seats For Election: | All 31 seats to the Tønder Municipal Council |
| Majority Seats: | 16 |
| Turnout: | 20,730 (69.8%) 2.2pp |
| Election Date: | 16 November 2021 |
| Image1: | T |
| Party1: | Tønder Listen |
| Last Election1: | Did not stand |
| Seats1: | 9 |
| Seat Change1: | 9 |
| Popular Vote1: | 5,906 |
| Percentage1: | 29.0% |
| Swing1: | New |
| Party2: | Venstre |
| Last Election2: | 15 seats, 44.6% |
| Seats2: | 6 |
| Seat Change2: | 9 |
| Popular Vote2: | 3,472 |
| Percentage2: | 17.1% |
| Swing2: | 27.5% |
| Image3: | A |
| Party3: | Social Democrats |
| Last Election3: | 6 seats, 20.6% |
| Seats3: | 5 |
| Seat Change3: | 1 |
| Popular Vote3: | 3,010 |
| Percentage3: | 14.8% |
| Swing3: | 5.8% |
| Image4: | S |
| Party4: | Schleswig Party |
| Last Election4: | 2 seats, 5.8% |
| Seats4: | 4 |
| Seat Change4: | 2 |
| Popular Vote4: | 2,706 |
| Percentage4: | 13.3% |
| Swing4: | 7.5% |
| Image5: | L |
| Party5: | Borgerlisten |
| Last Election5: | 1 seat, 4.4% |
| Seats5: | 3 |
| Seat Change5: | 2 |
| Popular Vote5: | 1,509 |
| Percentage5: | 7.4% |
| Swing5: | 3.0% |
| Image6: | C |
| Party6: | Conservatives |
| Last Election6: | 1 seat, 2.7% |
| Seats6: | 2 |
| Seat Change6: | 1 |
| Popular Vote6: | 1,115 |
| Percentage6: | 5.5% |
| Swing6: | 2.8% |
| Image7: | F |
| Party7: | Green Left |
| Last Election7: | 1 seat, 3.5% |
| Seats7: | 1 |
| Seat Change7: | 0 |
| Popular Vote7: | 805 |
| Percentage7: | 4.0% |
| Swing7: | 0.5% |
| Image8: | D |
| Party8: | The New Right |
| Last Election8: | 0 seats, 0.7% |
| Seats8: | 1 |
| Seat Change8: | 1 |
| Popular Vote8: | 747 |
| Percentage8: | 3.7% |
| Swing8: | 3.0% |
| Image9: | O |
| Party9: | Danish People's Party |
| Last Election9: | 3 seats, 10.4% |
| Seats9: | 0 |
| Seat Change9: | 3 |
| Popular Vote9: | 573 |
| Percentage9: | 2.8% |
| Swing9: | 7.6% |
| Mayor | |
| Posttitle: | Mayor after election |
| Before Election: | Henrik Frandsen |
| Before Party: | Tønder Listen |
| After Election: | Jørgen Popp Petersen |
| After Party: | Schleswig Party |
In 2020, Venstre would drop, mayor at the time, Henrik Frandsen as their candidate for the next election. This led to Henrik Frandsen along with 5 others, to create Tønder Listen, a breakout party who intended to get Henrik Frandsen reelected as mayor.[1]
In the election result, Tønder Listen would win 9 seats, while Venstre would lose 9 seats and only win 6. However, Venstre wanted to avoid Henrik Frandsen continuing as mayor. Eventually, Jørgen Popp Petersen from regional party Schleswig Party had a majority backing him as mayor. The agreement consisted of the Social Democrats, the Conservatives, The New Right, Borgerlisten and Schleswig Party. This marked the first mayor from Schleswig Party in 75 years.[2] [3]
For elections to Danish municipalities, a number varying from 9 to 31 are chosen to be elected to the municipal council. The seats are then allocated using the D'Hondt method and a closed list proportional representation.Tønder Municipality had 31 seats in 2021
Unlike in Danish General Elections, in elections to municipal councils, electoral alliances are allowed.
Electoral Alliance 1
| Party | Political Position | |
|---|---|---|
| Centre-right | ||
| Centre-right to Right-wing | ||
Electoral Alliance 2
| Party | Political Position | |
|---|---|---|
| Right-wing | ||
| Right-wing | ||
| Centre-right |
Electoral Alliance 3
| Party | Political Position | |
|---|---|---|
| Centre-left to Left-wing | ||
| Borgerlisten | Local | |
| Left-wing to Far-left | ||
| Centre-left to Left-wing |