"The following have been confirmed as candidates in this election. Their names are listed below in the order they will appear on the ballot paper and in the election address booklet.
Roger Bannister, Knowsley Branch
Nominated by 25 branches
John Burgess, Barnet Local Government Branch
Nominated by 62 branches and 1 regional council
Dave Prentis, General Secretary
Nominated by 204 branches, 8 regional councils, 6 service groups and the National Executive Council
Heather Wakefield, UNISON National (Staff) Branch
Nominated by 81 branches, 1 regional council, and 1 service group
Members not on the UNISON central membership system on 9 August 2015 will not be eligible to vote in this election. Retired members are entitled to vote.
Ballot papers will be sent to members’ home or other notified address in writing.
The despatch of ballot papers to individual members will begin on 9 November 2015.
The deadline for receipt of ballot papers by the Scrutineer is 5pm on Friday 4 December 2015. The result of this election will be available on 17 December 2015"
(My underlying above - hat tip info here at UNISON)