Stir up judgement for the audience (6)
I believe the answer is:
incite
'stir up' is the definition.
(I know that stir up can be written as incite)
'judgement for the audience' is the wordplay.
'judgement' becomes 'insight' (insight is a kind of judgement).
'for the audience' shows a homophone (sound like) (how an audience might hear it).
'insight' is a homophone of 'INCITE'.
(Other definitions for incite that I've seen before include "Stir up (eg, violence)" , "Provoke to action" , "Trigger" , "Foment, urge on" , "Encourage to action" .)