In the 1859 United Kingdom general election, the Whigs, led by Lord Palmerston, held their majority in the House of Commons over the Earl of Derby's Conservatives. This election is also considered to be the first to be contested by the Liberal Party - a name unofficially adopted to cover the alliance of Whigs, Peelites, Radicals and Irish Brigade who had previously voted against the Derby administration in the House of Commons that had led to the election. It was also the last general election entered by the Chartists, before their organisation was dissolved. As of 2017, this is the last election in which the Conservatives won the most seats in Wales.
The election was the quietest and least competitive between 1832 and 1885, with most county elections being uncontested. The election also saw the lowest number of candidates between 1832 and 1885, with Tory gains potentially being the result of a lack of opposition as much as a change in public opinion.