Hat raised by a politician given to delay (8)
I believe the answer is:
dilatory
'given to delay' is the definition.
'hat raised by a politician' is the wordplay.
'hat' becomes 'lid' ('lid' can be a synonym of 'hat').
'raised by' is a reversal indicator.
'politician' becomes 'tory' (I've seen this before).
'lid' backwards is 'dil'.
'dil'+'a'+'tory'='DILATORY'
(Other definitions for dilatory that I've seen before include "Given to procrastination" , "Causing delay" , "Tending towards procrastination" , "Inclined to waste time and lag behind" , "Lazy - slow" .)