Vote against regular cycling rally (7)
I believe the answer is:
convene
'rally' is the definition.
(both can mean to gather together)
'vote against regular cycling' is the wordplay.
I cannot really understand how this works, but
'against' could be 'on' (I've seen this in other clues) and 'on' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for convene that I've seen before include "Bring together to meet" , "rally" , "Call (meeting)" , "Gather (for meeting)" , "Bring together (for a meeting)" .)