The
County of Carmarthenshire was represented in the
House of Commons by two
members of Parliament. For many years prior to 1868 elections had been uncontested, with both MPs being
Conservatives. The members were effectively chosen by the powerful Campbell family,
Earls Cawdor. The
Reform Act 1867 had greatly increased the franchise, allowing large numbers of working-class men to vote for the first time. This, along with difficulties in the Conservative Party over candidate selection, led the Carmarthenshire Liberals to decide to contest the
1868 general election. Rather than choosing a member of the landed gentry, the party chose Sartoris as their candidate. As a relative newcomer to the area he benefitted from being seen as an "outsider", not subject to the traditional land owning interests. He was also based in the rapidly industrialising
Llanelli district, the only part of the county where there was population growth. With an efficient party machine, largely organised by non-conformist clergymen of the district, Sartoris secured a spectacular victory, his 3,280 votes easily winning the first seat in the constituency. The Conservative Party learnt from their defeat, at the
next election in 1874 Earl Cawdor's eldest son,
Viscount Emlyn, regained the seat from Sartoris. ==Later life==