Although he was elected at Plympton Erle (he was unseated on petition on 28 January 1703), he chose to contest the result at Hindon, bringing a charge of bribery against one of the successful candidates, George Morley.
[1] Elected MP for Hampshire again in 1705, in 1708 Jervoise stood aside for the Earl of Portland's son Viscount Woodstock.
Woodstock succeeded to the earldom in 1709, and Jervoise retook the seat at the ensuing by-election.
[1] He married in 1691 Elizabeth, daughter of Sir Gilbert Clarke, with whom he had a son.
[1] The costs of repeated contests for parliamentary seats obliged him to sell the Wiltshire manor of Stratford Tony, but he retained the estates of Northfield and Weoley Park in Worcestershire, Britford in Wiltshire, and Herriard in Hampshire as well as estates in Essex obtained through his second marriage.