The January 1910 United Kingdom general election was held from 15 January to 10 February 1910. The government called the election in the midst of a constitutional crisis caused by the rejection of the People's Budget by the Conservative-dominated House of Lords, in order to get a mandate to pass the budget.
The Labour Party, led by Arthur Henderson, returned 40 MPs. Much of this apparent increase (from the 29 Labour MPs elected in 1906) came from the defection, a few years earlier, of Lib Lab MPs from the Liberal Party to Labour.
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