Sense politician is enthralled by free outing (8)
I believe the answer is:
gumption
'sense' is the definition.
(I know that sense can be written as gumption)
'politician is enthralled by free outing' is the wordplay.
'politician' becomes 'MP' (Member of Parliament).
'is enthralled by' means one lot of letters goes inside another ('enthral' can mean 'capture').
'free' indicates an anagram.
'outing' anagrammed gives 'gution'.
'mp' inserted into 'gution' is 'GUMPTION'.
(Other definitions for gumption that I've seen before include "To impugn (anag) - common sense" , "Fortitude and determination" , "Sense; courage" , "Informal common sense or initiative" , "Informal drive and initiative" .)