Diane Forsythe is a Democratic Unionist Party (DUP) politician, serving as a Member of the Northern Ireland Assembly (MLA) for South Down since 2022.

[1] Forsythe is the DUP's Spokesperson for Communities, Childcare and Early Years.

The Police Service of Northern Ireland launched an investigation into "a defamatory message" being shared about Forsythe during the election campaign.

[5] On 5 May 2022, Diane Forsythe was elected as the new Democratic Unionist Party MLA for the South Down Constituency.

[6] She was the DUP's candidate in South Down at the 2024 general election, coming third with 7,349 votes (16.2%)[7][8]