Nationalist parties now have more MPs, than Unionist parties - for the first time in Northern Ireland. The former want a united Ireland; the latter prefer to stay in the UK.
However many more voters supported Unionist parties, than Nationalist ones.
Polls in the Republic of Ireland are pretty even as to whether that country's citizens would prefer to join up with Northern Ireland, or to stay independent.
Economics are the real problem though - as NI receives a monthly subvention of €1 billion from the UK Exchequer.
With a €210 billion National Debt (on which the Republic struggles to pay the interest) - it would be impossible for them to fund the annexation of NI.
Accordingly, NI will remain part of the United Kingdom for the foreseeable future.