Northern Ireland: border polls
The UK Secretary of State has the power to hold a border poll. They must hold one if they think a majority of people in Northern Ireland favour a united Ireland.

The Northern Ireland (St Andrews Agreement) (No 2) Bill (240 KB , PDF)
The Northern Ireland (St Andrews Agreement) (No 2) Bill (240 KB , PDF)
The UK Secretary of State has the power to hold a border poll. They must hold one if they think a majority of people in Northern Ireland favour a united Ireland.
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.
This briefing looks at the independent review of the Windsor Framework commissioned by the government and democratic oversight of the Framework