In the Church of England diocesan synods exist under the terms of the Synodical Government Measure 1969.[1]
A diocesan synod consists of three Houses, as follows:
Clergy and lay elected representatives are elected for a three-year term of office. The first diocesan synods met in 1970, and elections have been held every three years since, most recently in 2018. Election is by the members of the deanery synods of the diocese, and the number of representatives of each deanery is in proportion to the total number of 'members' of the churches in that deanery, compared with the diocese as a whole. The House of Clergy and the House of Laity should have approximately the same number of members. The method of election may be by simple plurality (i.e., first past the post) or by single transferable vote, and each diocesan synod may choose between these two.[2]
In general the three Houses of the diocesan synod meet together, debate together and vote together, and a majority is assumed to be a majority of each of the three Houses. However, a vote by Houses can be requested, and in certain cases is required. In a vote by Houses, the consent of each of the three Houses is required in order for the assent of the Synod to be given. In addition, the diocesan bishop may declare that the House of Bishops shall only be deemed to have assented if the assenting majority includes the bishop. This means that the diocesan bishop may exercise a veto over the diocesan synod if they so wish.