The Greater Manchester mayoral contest has to take place within 35 days of the post becoming vacant.
The nomination period for candidates for this election runs from 10:00 BST on 26 June to 16:00 on 3 July.
The deadline for voter registration is midnight on 14 July.
To have a postal vote in this election you must apply by 17:00 BST on Wednesday 15 July.
The deadline to apply for a proxy vote is 17:00 BST on Wednesday 22 July.
If you are already registered to vote by post, you will be sent a postal voting pack containing your ballot paper, which should arrive between 17 and 21 July.
If you don’t manage to post it in time you can return it by hand before 22:00 BST on polling day to your local electoral registration office or a polling station.