In 2022, she was elected by the new States Assembly as the first female Chief Minister of Jersey, a role which she officially took on 12 July that year.

In January 2024, Moore lost a vote of no confidence in her position, becoming the first Chief Minister to do so.

[citation needed] After completing a BA in French at the University of Birmingham and a postgraduate diploma in broadcast journalism at Highbury College, Moore worked in news departments for independent local radio stations in the South of England.

[citation needed] Moore stood for St Peter's sole deputy seat in the 2011 general election for the States Assembly.

One notable law introduced during Moore's tenure was the Sexual Offences (Jersey) Law 2018, which strengthened protections for islanders (particularly children) against sexual offences, and for the first time introduced protection against female genital mutilation.

In November 2020, Moore lodged a vote of no confidence in Chief Minister John Le Fondré, over a scandal involving the Government of Jersey Chief Executive Charlie Parker being allowed to take up a non-executive directorship as a second job.