Gravesham.

On 20 June 2025, Sullivan voted against the Terminally Ill Adults (End of Life) Bill at Third Reading and against two amendments designed to close loopholes around voluntary starvation as a route to qualifying for assisted dying -- making her one of the Labour MPs who opposed the Bill's passage to the Lords. She has spoken and voted on assisted dying more than once, and her voting record places her 15 percentage points more aligned with assisted dying access than the average Labour MP, suggesting her opposition reflects process or safeguarding concerns rather than outright hostility to the principle. Beyond that vote, she has been active in local campaigns: she has lobbied ministers to use Lower Thames Crossing toll revenue to fund the return of a Gravesham ferry service, raised an early day motion on a local mental health counselling fund, and hosted a business event around LTC employment opportunities.

At 88% voting participation and 97.8% party-line alignment, Sullivan is a broadly loyal and engaged backbencher. Her speeches cluster around social care, the economy, health, and local government -- all consistent with a constituency MP focused on service delivery. She sits on the Science, Innovation and Technology Committee. Her stance profile shows strong alignment with workers' rights and progressive taxation, but low alignment with parliamentary scrutiny and Lords oversight measures, meaning she tends to back government business over procedural challenges from either chamber.

Her news coverage is heavily transport-focused, driven by the ferry campaign, alongside local crime stories. Sentiment across 77 articles over 90 days is broadly neutral. Disability benefits and public health show small but notable gaps below the Labour average. Data on her committee activity is limited.