[1] In 1715, Wallop was returned as a Whig Member of Parliament for both Andover, where a family interest existed, and Hampshire, choosing to sit for the latter.
In 1717, he took the side of Stanhope and Sunderland over Walpole and Townshend and was rewarded with appointment as a junior Lord of the Treasury.
In 1731, he suggested to Queen Caroline (through the medium of her favorite, Charlotte Clayton) that he should replace the Duke of Bolton as the Government's electoral manager in Hampshire, but nothing immediately came of this.
Lymington worked in "perfect harmony" with Lord Harry Powlett, Bolton's brother and one of the Whig candidates, but Bolton's opposition to Anthony Chute, the other Whig, resulted in the defeat of Chute and the victory of one of the Tory candidates, Edward Lisle.
He regained the offices of Governor and Vice-Admiral of the Isle of Wight in 1746, when Bolton supported the abortive ministry of Bath and Granville and was deprived of those posts by the Pelhams.