English politician drawn and drained (7)
I believe the answer is:
emptied
'drained' is the definition.
(I've seen this before)
'english politician drawn' is the wordplay.
'english' becomes 'e' (abbreviation).
'politician' becomes 'mp'.
'drawn' becomes 'tied' ('tie' can be a synonym of 'draw').
'e'+'mp'+'tied'='EMPTIED'
'and' is the link.
(Other definitions for emptied that I've seen before include "Vacated" , "Removed the contents" , "Evacuated" , "given vacation" , "gutted" .)