Mockery of politician in debate that hasn't succeeded (8)
I believe the answer is:
Here is my best explanation:
'mockery' is the definition.
'politician in debate that hasn't succeeded' is the subsidiary indication.
I cannot really understand how this works, but
'politician' could be 'con' and 'con' is present in the answer.
The remaining letters 'tempt' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' is the link.
(Other definitions for contempt that I've seen before include "Feeling of despising something - perhaps court?", "Feeling of dislike for, perhaps of court?", "Complete lack of respect, as sometimes of court", "The feeling of despising someone", "The feeling of despising a person", "Disregard for the rules of a court of law", "Beneath this is despicable", "Very low opinion, sometimes of court", "Feeling of disdain, perhaps of court" and "ridicule".)