The 1857 United Kingdom general election was held between 27 March 1857 to 24 April 1857, to elect members of the House of Commons, the lower house of Parliament of the United Kingdom. The Whigs, led by Lord Palmerston, won a majority in the House of Commons as the Conservative vote fell significantly. The election had been provoked by a vote of censure in Palmerston's government over his approach to the Arrow affair which led to the Second Opium War.