Political troublemaker (8)
I believe the answer is:
agitator
'political troublemaker' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for agitator that I've seen before include "Person who stirs up trouble" , "Stirrer up of public feeling" , "One who stirs things up, trouble-maker" , "Subversive person" , "Rabble-rouser - blender" .)