Born into a famous Whig dynasty, Cavendish was a long serving, if not always very active county member, who gave ‘steady and consistent’ support to the Liberal administrations of the period.
Standing as a ministerial supporter, Cavendish was returned unopposed in his brother’s place, 27 May 1834, when he voiced support for reform of the church and the poor laws, and apparently became the youngest member of the House.
In his maiden speech, 15 Feb. 1838, he expressed the Whig view of the ballot as a measure which would be ineffective, encourage hypocrisy, and prevent electors from being held publicly accountable for their actions.
Although he voiced support for a general reduction of tariffs and taxes on consumption at the 1841 election, when he was returned without opposition, Cavendish opposed Peel’s 1842 budget, including the reintroduction of income tax, and, with a few exceptions, generally voted against the repeal of the corn laws until 1845, after which he became a staunch free trader.
After his unopposed return in 1847, Cavendish was less active, but continued to vote against radical demands such as the ballot, the equalisation of the county and borough franchises, and the repeal of the ‘knowledge taxes’.
Honouring the pledge he made at the 1852 election to devote himself to protecting local interests, Cavendish, along with other Derbyshire members, resisted proposals to rate mines for poor law purposes, which were unpopular with the owners of the county’s extractive industries, and served on inquiries on the issue in 1856 and 1857.
In the 1860s, he objected to the government’s union chargeability bills, enabling some of the funds collected through the poor rates to be siphoned off to poor law unions in the areas most distressed by the cotton famine, such as Lancashire.
Cavendish faced the rarity of a contest at the 1868 election, but was returned at the top of the poll, along with a Conservative, with whom he shared the representation until retiring in favour of his nephew, Lord Edward Cavendish, at the 1880 general election, explaining that ‘for the past two or three years I have felt myself unequal to the close attendance at the House of Commons needful to perform my duty, and to the late hours which the House pursues its deliberations’.
