Sinn Féin held on to all seven of its seats at Westminster in the 2024 election, making it the largest Northern Irish party in the UK parliament, the Northern Ireland Assembly, and in local government in Northern Ireland.
Although Sinn Féin refuses to take seats in Westminster, declining to swear an oath of allegiance to the crown, its result provides a significant boost for Irish nationalism. It also raises hopes of a border poll on whether Northern Ireland should reunify with the rest of the island of Ireland sometime in the 2030s, even though the unionist bloc vote (across multiple parties) is still slightly larger than the combined nationalist vote in Westminster.
Going into the elections there was an expectation that Sinn Féin would emerge as the largest party due to the fragmentation of the unionist vote. But it also managed to increase its majorities in all seven constituencies.