Marcel van Dam, Dutch sociologist and former politician, is credited with having invented the exit poll, and being the first to implement an exit poll during the Dutch legislative elections on February 15, 1967.
Like all opinion polls, exit polls by nature do include a margin of error. A famous example of exit poll error occurred in the 1992 UK General Election, when two exit polls predicted a hung parliament. The actual vote revealed that Conservative Party Government under John Major held their position, though with a significantly reduced majority. Investigations into this failure identified a number of causes including differential response rates (the Shy Tory Factor), the use of inadequate demographic data and poor choice of sampling points
Those who had voted previously can recast their vote as an exit confirmation. Results would be announced at 6 pm on the Election Day.
Last edited by GMNet on Wed Jan 07, 2015 9:43 pm; edited 1 time in total