Conservative Party? (4,5)

'conservative' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'party?' is the wordplay.
I cannot really see how this works, but
'party?' could be 'event' (party is a kind of event) and 'event' is present in the answer.
The remaining letters 'work' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).