Reply #8: exit polls have a margin of error of 3% usually more

[nicho]

how is that going to help determine an election with a margin of victory of 2%. polls taken in the press are notoriously unreliable. if I remember my stats correctly, a margin of error greater than 3% is statistically invalid. most TV polls seem to be 3.5% or 4%. also, do you really want a sample of say 1000 people to eliminate the election results where 5 million people voted.