The 2017 United Kingdom general election in Northern Ireland takes place on June 8, 2017. All eighteen seats in Northern Ireland are contested. The Democratic Unionist Party (DUP) gain two seats for a total of ten, and Sinn Féin wins seven, an improvement of three. Independent Unionist Sylvia Hermon is also re-elected in her constituency of North Down. Meanwhile, the Social Democratic & Labour Party (SDLP) loses three seats and the Ulster Unionist Party (UUP) loses two seats, meaning they both lose all their representation in the House of Commons. The two parties so central to the Good Friday Agreement are not represented in Westminster nineteen years after the signing of the historic deal.
As Sinn Féin maintains a policy of abstentionism in regards to the Parliament of the United Kingdom, the 2017 election marks the first parliament since 1964 without any Irish nationalist MPs who take their seats in the House of Commons in Westminster.
Nationally, the governing Conservative Party falls eight seats short of a parliamentary majority after the election, reduced to four if the absence of Sinn Féin is taken into account. The DUP thus holds the balance of power, and announces on June 10 that it will support the Conservative government on a “confidence and supply” basis.
Five seats change hands in Northern Ireland. The SDLP loses its seats in Foyle and South Down to Sinn Féin and the constituency of Belfast South to the DUP. Meanwhile, the UUP loses South Antrim to the DUP and Fermanagh and South Tyrone to Sinn Féin. The number of unionist and nationalist representatives, eleven and seven respectively, remain unchanged from the 2015 United Kingdom general election, although none of the nationalist members are participating in the current Parliament.