Divine law associated with electoral system (7)
I believe the answer is:
predict
'divine' is the definition.
(thesaurus)
'law associated with electoral system' is the wordplay.
'law' becomes 'edict' (I've seen this before).
'associated with' says to put letters next to each other.
'electoral system' becomes 'pr' (I've seen this in other clues).
'edict' put after 'pr' is 'PREDICT'.
(Other definitions for predict that I've seen before include "Foretell, prophesy" , "Divine" , "Estimate consequence of" , "Forecast" , "Foresee" .)