The current assembly member is Keith Prince of the Conservative Party who was first elected in 2016.

The Conservative win upon its creation in 2000 was somewhat unexpected, as at that point, the vast majority of the area it covers (excluding two Redbridge wards that fall under the Chingford and Woodford Green parliamentary seat) was represented by Labour MPs.

However, the Romford and Upminster constituencies were among the very small number of seats that the Conservatives gained from Labour at the subsequent general election of 2001.

Consequently, this London Assembly seat became very safe for the Conservatives in the 2008 election, where they got more than twice as many votes as Labour.

Below are the results for the candidate which received the highest share of the popular vote in the constituency at each mayoral election.