Conservative leaving ballet for Hamlet? (4)
I believe the answer is:
dane
'hamlet?' is the definition.
(Hamlet is a famous Dane)
'conservative leaving ballet' is the wordplay.
'conservative' becomes 'C' (UK political abbreviation).
'leaving' indicates named letters should be taken away.
'ballet' becomes 'dance' (I've seen this in another clue).
'dance' with 'c' removed is 'DANE'.
'for' acts as a link.
(Other definitions for dane that I've seen before include "Scandinavian" , "Hamlet, say" , "See 7 Down" , "One from Esbjerg" , "European in Aden" .)