Earl is a veteran campaigner working with charities like
Dorset Wildlife Trust and the Bournemouth Foodbank. In the
2015 Poole Borough Council election, she was a
Liberal Democrat candidate in
Creekmoor ward but was not elected. In the
2019 Bournemouth, Christchurch and Poole Council election, she was elected in
Newtown and Heatherlands. In the
2023 Bournemouth, Christchurch and Poole Council election, she was re-elected in her ward topping the poll with 1,966 votes. In the election the Liberal Democrats became the largest party and took control of the council holding the most seats. The Liberal Democrats formed a coalition with
Christchurch Independents,
Poole People Party and the Bournemouth Independent Group. Earl was appointed Deputy Council Leader with the portfolio of "Connected Communities". In 2023, Earl was awarded the Belinda Eyre-Brook Award at the
Liberal Democrat Conference in
Bournemouth. In the
2024 United Kingdom general election, council leader
Vikki Slade was elected
Member of Parliament (MP) for
Mid Dorset and North Poole, so Earl took over as interim council leader. When the council reconvened she was elected. As council leader she has been responsible in negotiations surrounding the future of the
Bournemouth Air Festival. In September 2024, the "Best Value Notice" the Government put on BCP Council was lifted with Earl saying the council was in a "much healthier place". As council leader she launched a consultation on new
parish and
town councils. In April 2025, she cut the ribbon at the new soft play facility at
Kings Park Leisure and Learning Centre in
Boscombe. In June 2025, Earl called for the cancellation of a planned concert in Bournemouth by the American musician
Marilyn Manson for his
One Assassination Under God Tour. This was due to the allegations made by actress
Evan Rachel Wood. On 24 June 2025, BCP Council was won Senior Leadership Team of the Year at the Municipal Journal (MJ) Local Government Achievement Awards. Earl said "this award is real recognition for the remarkable work BCP Council does despite facing significant and unique challenges". In July 2025, she warned that BCP Council was under "imminent financial threat" over increased demand for
SEND services. The council has taken on debt to pay for those demands. Earl wrote a letter to
Deputy Prime Minister of the United Kingdom Angela Rayner asking for further SEND support. In September 2025, she opened the
Liberal Democrat Conference in
Bournemouth alongside MP
Vikki Slade. == Political views ==