Northern Ireland is part of the United Kingdom.

Members of the Northern Ireland Assembly are elected by Single Transferable Vote. The Assembly is currently suspended.

Single Transferable Vote is also used for Local Government and European Elections. Elections to the UK Parliament are by First Past the Post.

The politics of Northern Ireland is split between those who want independence from the UK and those who do not. Advocates of Single Transferable Vote point to the successful use of the system here to show that the system can work well in factional political environments.