At the general election of 1754 Carysfort and Coulson Fellowes were returned unopposed for Huntingdonshire, as joint candidates supported by the Earl of Sandwich. In Parliament Carysfort adhered to the Bedford-Sandwich-Gower group. The circumstances of his being placed at the Admiralty, after Temple’s dismissal as first lord, are unascertained. In 1758-9 Carysfort was chairman of the select committee ‘to inquire into the original standards and measures in this kingdom, and to consider the laws relating thereto’
At the general election of 1761 Lord Mandeville, eldest son of the Duke of Manchester, having come of age, was going to claim one seat for Huntingdonshire, and for a while there was some apprehension that Fellowes might join him;
Sandwich, who planned to bring in for Huntingdonshire at the general election his son Lord Hinchingbrooke, together with Carysfort, started his campaign as early as 1765, and carried it on full blast throughout 1767 with Sir Robert Bernard for opponent. But on 22 Aug. 1767 Elizabeth Montagu wrote to her husband Edward Montagu (Member for Huntingdon 1734-68):
It is said in Huntingdonshire that Lord Carysfort will now decline his pretensions there ... The furniture at Elton was sold yesterday, it was first seized by a butcher at London for a debt of only £219, but his credit has been so bad for a long time that the butcher in the country would not trust him for a joint of meat, nor bakers for a loaf of bread. All this has been brought upon him by an enormous expense in kept women. He used to have one always within a few miles of his country house. His lady is much pitied, poor woman she was far from extravagant. The son is a fine boy. I hope Lady C. will not be so kind a wife as to forget she is a mother ... I remember this fine gentleman was said to have spent £10,000 upon a mistress some years ago. She went mad and squandered all the jewels and fine things he had given her. Since this misfortune of Lord C. Lord Sandwich has taken the whole expense of the county upon himself, and they say it is enormous.
The story seems substantially correct though probably embroidered in detail; Sandwich wrote to Hardwicke, 6 Dec. 1767, that ‘the disagreeable situation of Lord Carysfort’s affairs’ had obliged him to withdraw, and that in fact Sir Robert Bernard’s ‘whole dependence was that Lord Carysfort could not go through with the contest’.
