<human>:  Why did the Labour Party win in the British General election, 1929?
<bot>: The Labour Party was formed in 1900 and remained the main opposition party until 1945. During this time, the Labour Party won 4 general elections, and formed the government twice. In 1924, the Labour Party won a majority of seats in parliament, and formed the government. However, in 1929, the Labour Party lost the election, and the Conservative Party formed the government.