Vote to return to the dance (6)
I believe the answer is:
ballot
'vote' is the definition.
(synonyms)
'to return to the dance' is the wordplay.
'return' shows that the letters should be reversed in order.
'to' means one lot of letters go next to another (I've seen this in other clues).
'the dance' becomes 'ball' (ball is a kind of dance).
'to' in reverse letter order is 'ot'.
'ot' after 'ball' is 'BALLOT'.
(Other definitions for ballot that I've seen before include "Lottery (eg, for tickets)" , "Single or collective vote" , "The process of voting" , "Document listing the alternatives to vote for" , "Poll" .)