| Election Name: | 2021 East Sussex County Council election |
| Country: | East Sussex |
| Type: | parliamentary |
| Previous Election: | 2017 East Sussex County Council election |
| Previous Year: | 2017 |
| Next Election: | 2025 East Sussex County Council election |
| Next Year: | 2025 |
| Seats For Election: | All 50 seats to East Sussex County Council |
| Majority Seats: | 26 |
| Party1: | Conservative Party (UK) |
| Last Election1: | 30 seats, 45.6% |
| Seats1: | 27 |
| Seat Change1: | 3 |
| Popular Vote1: | 67,837 |
| Percentage1: | 42.0% |
| Swing1: | 3.6% |
| Party2: | Liberal Democrats (UK) |
| Last Election2: | 11 seats, 23.8% |
| Seats2: | 11 |
| Popular Vote2: | 33,692 |
| Percentage2: | 20.9% |
| Swing2: | 1.9% |
| Party3: | Labour Party (UK) |
| Last Election3: | 4 seats, 14.7% |
| Seats3: | 5 |
| Seat Change3: | 1 |
| Popular Vote3: | 24,624 |
| Percentage3: | 15.2% |
| Swing3: | 0.5% |
| Party4: | Green Party of England and Wales |
| Last Election4: | 0 seats, 5.8% |
| Seats4: | 4 |
| Seat Change4: | 4 |
| Popular Vote4: | 23,355 |
| Percentage4: | 14.5% |
| Swing4: | 8.7% |
| Party5: | Independent politician |
| Last Election5: | 5 seats, 6.6% |
| Seats5: | 3 |
| Seat Change5: | 2 |
| Popular Vote5: | 10,544 |
| Percentage5: | 6.5% |
| Swing5: | 0.1% |
| Council control | |
| Posttitle: | Council control after election |
| Before Party: | Conservative Party (UK) |
| After Party: | Conservative Party (UK) |
The 2021 East Sussex County Council election took place alongside the other local elections. All 50 seats to East Sussex County Council were up for election.[1]
|-
| Party | Seats | +/- | Votes | % | +/- | ||
|---|---|---|---|---|---|---|---|
| 6 | 11,958 | 43.3 | –0.7 | ||||
| 3 | 10,785 | 39.0 | –1.3 | ||||
| 0 | 2,497 | 9.0 | +0.4 | ||||
| 0 | 1,775 | 6.4 | +2.8 | ||||
| 0 | 389 | 1.4 | –2.1 | ||||
| 0 | 158 | 0.6 | N/A | ||||
| 0 | 58 | 0.2 | N/A | ||||
| Total | 9 | 27,620 | |||||
Division results
| Party | Seats | +/- | Votes | % | +/- | ||
|---|---|---|---|---|---|---|---|
| 4 | 9,002 | 38.9 | –1.3 | ||||
| 3 | 1 | 8,786 | 37.8 | –7.6 | |||
| 1 | 1 | 4,100 | 17.7 | +11.7 | |||
| 0 | 1,281 | 5.5 | –2.4 | ||||
| Total | 8 | 23,139 | 100.0 | ||||
The incumbent Independent Ruth O'Keeffe did not stand for re-election.
The incumbent Philip Boorman previously stood for the Conservative Party
Deirdre Earl-Williams vote share is calculated on the 2019 Bexhill West By-Election that she won following the death of her husband, the former incumbent Stuart Earl.
Daniel Dak Yan Shing previously stood as a Liberal Democrat before leaving the party due to his father's expulsion for bringing the party into disrepute.
Bob Bowdler was the previous incumbent in Hailsham Market (Wealden)
Stephen Sai Hung Shing was previously an elected councillor for the Liberal Democrats before being expelled for bringing the party into disrepute.
The Heathfield and Mayfield by-election was triggered by the death of Conservative councillor Rupert Simmons.[2]
The Meads by-election was triggered by the death of Conservative councillor Barry Taylor.[3]