The 'Bradley effect' is only one of any number of possible phenomena that may occur and distort the results. Perhaps a new phenomena will occur and it will be n

The 'Bradley effect' is only one of any number of possible phenomena that may occur and distort the results. Perhaps a new phenomena will occur and it will be named the 'Obama effect'. In 2004 the exit polls showed that Bush had very likely lost but this was wrong. Only after the event did they they came up with a explanation.