Anyone who declares the outcome of an election based solely or largely on the basis of exit survey data is a fool. Evidently some of the barometer precincts in use Tuesday did not perform barometrically. There's also the issue of inclusivity. An exit survey works only to the extent that it can accurately mirror the voting universe. Pollsters will, when pressed, acknowledge the increasing number of citizens who decline to participate in surveys.
Some voters do participate - and lie, for fun.
Voting rules are getting more, not less, restrictive. Absentee ballots used to be available only to military overseas or people who could document that they'd be out of state on election day. States increasingly let people vote by mail or in advance, as a convenience. One of my daughters voted in Texas more than a week before the election - at her local supermarket. Exit pollsters were not posted at her supermarket checkout line.