Victim of trickery expected to hold power (4)
I believe the answer is:
dupe
'victim of trickery' is the definition.
'dupe' can be an answer for 'victim' (synonyms). I'm not sure about the 'of trickery' bit.
'expected to hold power' is the wordplay.
'expected' becomes 'due' (similar in meaning).
'to hold' is an insertion indicator.
'power' becomes 'p' (symbol in physics).
'due' going around 'p' is 'DUPE'.
Can you help me to learn more?
(Other definitions for dupe that I've seen before include "A pawn or patsy" , "Puppet" , "Pawn, mug" , "One deceived, tricked" , "Swindle" .)