David Simpson (born 1959) is a Democratic Unionist politician in the United Kingdom. He has been the Member of Parliament for Upper Bann since the 2005 general election when he defeated Ulster Unionist Party leader David Trimble. He is is also a Member of the Legislative Assembly for the same seat. 1959 (MCMLIX) was a common year starting on Thursday of the Gregorian calendar. ... The Democratic Unionist Party is the largest of two unionist parties in Northern Ireland and is led by Ian Paisley. ... A Member of Parliament, or MP, is a representative elected by the voters of an electoral district to a parliament; in the Westminster system, specifically to the lower house. ... Upper Bann is a Parliamentary Constituency in the House of Commons and also an Assembly constituency in the Northern Ireland Assembly. ... The United Kingdom general election of 2005 was held on Thursday, 5 May 2005 and won by the Labour Party, led by Tony Blair. ... The Ulster Unionist Party (UUP, sometimes referred to as the Official Unionist Party or OUP or, in a historic sense, simply the Unionist Party ) is a moderate unionist political party in Northern Ireland, which formed its government between 1921 and 1972 and was supported by most unionists throughout the Troubles. ... David Trimble The Right Honourable William David Trimble (born on October 15, 1944) is a Northern Ireland politician, who served as leader of the Ulster Unionist Party (UUP) and the first First Minister of Northern Ireland. ... This is a list of members of the Northern Ireland Assembly. ...