NPR’s Michel Martin talks to David Wasserman of the Cook Political Report about what races could potentially predict how election night unfolds.

Wasserman comments,

“Exit polls today are not really designed to help inform race calls or tell us who’s ahead.” The biggest organization doing this for the major networks, SSRS, is conducting in-person interviews on election day in conjunction with a pre-election survey that has the same methodological limits due to low response rates as other polls. And so They tell us a lot how voters are feeling about the issues and which issues they are voting on…”