Members of three neighbouring Anglican church dioceses in Yorkshire are due to vote later on plans to merge into a single organisation.
Under Church of England proposals, the dioceses of Ripon and Leeds, Bradford and Wakefield would combine to become a new Diocese of Leeds.
If approved, the scheme is expected to be placed before the Church of England's general synod in July.
The proposed new diocese could be launched as soon as Easter next year.
'Element of devolution'
The vote follows a six-month consultation period which was held in each diocese in 2011-12.
The plans will be debated by members of each diocesan synod, or church parliament, before a vote is held at about 12:30 GMT on Saturday.
Members will be faced with a yes/no vote to dissolve the three individual dioceses and a simple majority is all that is required for approval.