members of the United Kingdom House of Commons formed a single Parliamentary party, and they continuously represented South Antrim In 1951, it was one of the last four seats to be uncontested in a British General Election. In the 1979 general election James Molyneaux had the largest majority of any MP in the entire of the United Kingdom, helped also by having one of the largest electorates. The boundary changes in 1983 reduced the Ulster Unionist vote somewhat, with a significant portion now contained in the new Lagan Valley (which Molyneaux then contested) but the constituency still gave strong results for the party. However, in April 2000 the Ulster Unionist incumbent, Clifford Forsythe, died suddenly. The ensuing by-election took place amidst a fierce political struggle between the Ulster Unionist Party and the Democratic Unionist Party over the Good Friday Agreement, an agreement that the UUP were themselves split over. The DUP had not contested the seat at the previous general election but on this occasion stood William McCrea, the former MP for Mid Ulster, who campaigned strongly on the DUP's refusal to co-operate with Sinn Féin in the absence of arms decommissioning by the IRA. The local UUP branch selected David Burnside to contest the seat who declared that he had supported the Good Friday Agreement at the time that it was signed but had since become disillusioned with its implementation. As a result, many commentators predicted that whatever the outcome of the election it was a severe blow for the UUP's leader David Trimble. On a low turnout amidst a fierce contest McCrea narrowly won the seat. Burnside was nominated again to contest the seat in the 2001 general election in which he overturned McCrea's majority, aided by tactical voting by SDLP and Alliance voters. However the DUP were eager to regain the seat and in the 2003 Assembly election they outpolled the UUP by 298 votes. In the 2005 general election McCrea defeated Burnside in their third contest, but with a noticeably lower swing than those garnered by other DUP candidates who ousted UUP MPs. McCrea held the seat in the 2010 general election with a reduced majority. The seat was won by the UUP at the 2015 general election following the defeat of McCrea by Danny Kinahan. The DUP regained the seat following the 2017 general election with the defeat of Kinahan by Paul Girvan. Members of