Measure approach to audience (5)
I believe the answer is:
weigh
'measure' is the definition.
(weighing is a kind of measuring)
'approach to audience' is the wordplay.
'approach' becomes 'way'.
'to audience' shows a homophone (sound like) (how it might sound to an audience).
'way' sounds like 'WEIGH'.
(Other definitions for weigh that I've seen before include "Use balance/scales" , "Tip the scales at" , "Estimate the value of" , "Measure heaviness" , "Assess" .)