Sinn Féin is one of the two largest parties in the Northern Ireland Assembly, winning one seat less than the Democratic Unionist Party (DUP) at the 2017 Northern Ireland Assembly election. In that assembly it is the largest Irish nationalist party, and it holds four ministerial posts in the power-sharing Northern Ireland Executive . In the UK House of Commons, Sinn Féin holds seven of Northern Ireland's 18 seats, making it the second-largest bloc after the DUP; there it follows a policy of abstentionism, refusing to sit in parliament or vote on bills. In the Oireachtas (the parliament of the Republic of Ireland), Sinn Féin currently sits as the main opposition and the second largest party having won the largest share of first-preference votes at the 2020 Irish general election.