Exit pollsters do their work in a few short days, but the information they glean dominates the political conversation for years. …
But now, as more voters cast ballots early or by mail and polling those voters becomes more costly and potentially less reliable, the exit polls are getting more expensive, too—and might even be losing some of their predictive power. …
In response, the Associated Press is trying to build the exit poll of the future. CONT.
Scott Bland, National Journal