Lever and Thomson both resigned in April 1972, and were replaced by Prentice and Silkin, the first two unsuccessful candidates. Jenkins resigned as deputy leader in the same month, and was replaced by Edward Short. This created an additional vacancy, and because the next two unsuccessful candidates had tied on votes, a run-off election was held to decide who would join the shadow cabinet. On 3 May, Barbara Castle defeated Eric Heffer by 111 votes to 89, to take the position.[1]
The 12 winners of the election are listed below:[1]