Polls are the best way to find out who plans to vote and for whom they plan to vote. But polls are imperfect. They ask questions of a sampling of people - often about a thousand - and use those answers to draw conclusions about the public at large.

This year there is a new wrinkle, one that complicates the picture and could throw some of the polling off: the effects of newly enacted restrictive voting laws.

Take, for instance, the results of a New York Times/CBS News/Quinnipiac poll released Wednesday. ‘Likely voters

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