Lord who ran to seize power deal (4)
I believe the answer is:
cope
'deal' is the definition.
(synonyms)
'lord who ran to seize power' is the wordplay.
I cannot really see how this works, but
'seize' could be 'cop' (copping is a kind of seizing) and 'cop' is found in the answer.
A single letter 'e' remains which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for cope that I've seen before include "loser of Prestonpans" , "Deal well with difficulties" , "Long cloak for a priest" , "Manage, subsist" , "Priest's ceremonial cloak" .)