In 1864 he abandoned diplomacy for politics, and in 1865 was elected Liberal member for Windsor, but was unseated on petition.
Mr Walter Long, unseated at Bristol, had made himself very popular among Irish Unionists, and a seat was found him in the constituency of South Dublin.
He was returned to the House of Commons in that year for the Irish borough of Carlow, and became a devoted admirer and adherent of Mr Gladstone; but he was practically a silent member, and his parliamentary career came to an end after the general election of 1865, when, having headed the poll for Bridgnorth, he was unseated on a scrutiny; he contested Bridgnorth again in 1868, but without success.
The whole history of the country is in fact one gloomy record of internecine wars, barbaric deeds and unstable governments, of adventurers usurping thrones, only to be themselves unseated, and of raids, rapine and pillage.
If a candidate is unseated a casual vacancy is created which has to be filled by a new election.