Possible Clues:

• Enquiry into voters' opinions as they leave the voting station
• Former pilot organised large, election-day survey
• Those involved in psephology see this as a way out for Count
• Voters' survey
• It's taken on the way out
• Enquiry into voters' opinions as they leave the voting place
• Election Day survey of voters
• Sample taken to give early indication of voting trends at an election
• Gives some indication who might succeed with leave to go to Count
• Test of voters' opinion on election day