>>1201954So, Northern Ireland is part of the UK, whereas the rest of the Ireland used to be part of the UK, was very unhappy about that, and is now the Republic of Ireland. Some people (mainly Catholics) in Northern Ireland want to join the Republic of Ireland, while some (mainly Protestants) want to remain part of the UK.
The main party for the Irish nationalists (people who want Ireland to unify) is Sinn Fein. This is the first election in a long time (maybe ever) when the largest single party was Sinn Fein. That is why people are saying unification is going to happen.
However, those people are idiots because, although Sinn Fein is the largest single party, it doesn't have a majority and the largest coalition of parties remains 'Unionist' parties who want to remain in the UK.