Sedgefield (UK Parliament constituency) the Member of Parliament was Tony Blair; who led a successful campaign for his party to win the 1997 general election in a landslide and thereafter served for ten years as the Prime Minister, leading the campaigns at two subsequent general elections. Blair was the first Prime Minister to lead the Labour Party to three consecutive victories. He resigned as the Member of Parliament for Sedgefield on the same day as he resigned as Prime Minister, which triggered a by-election. At the by-election on 19 July 2007, the official Labour Party candidate Phil Wilson was elected on a reduced majority
Prime Minister of Sri Lanka President will appoint a member of parliament as Prime Minister, who in the President’s opinion, "is most likely to command the confidence of Parliament". The prime minister will continue to hold office throughout the period during which the cabinet of ministers continues to function under the provisions of the constitution unless he/she resigns from the post or ceases to be a member of parliament. Under the Soulbury Constitution the post of Prime Minister was created in 1947 as the head of government in the Westminster system. In 1978, under the second amendment to the Republican Constitution of 1972 much of