Entrance a Democratic delegation (9)
I believe the answer is:
admission
'entrance' is the definition.
(admission is a kind of entrance)
'a democratic delegation' is the wordplay.
'democratic' becomes 'd' (political abbreviation).
'delegation' becomes 'mission' (synonyms).
'a'+'d'+'mission'='ADMISSION'
(Other definitions for admission that I've seen before include "Acknowledgment of crime" , "acceptance" , "concession" , "guilty plea, perhaps" , "Ticket holders expect this" .)