Way-out survey of voters? (4,4)
I believe the answer is:
exit poll
'survey of voters?' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for exit poll that I've seen before include "Test of voters' opinion on election day" , "Enquiry into voters' opinions as they leave the voting station" , "Sample of how people voted" , "Sampling of voters after voting" , "Voting canvass" .)