During  this week's episode of NAPS Chat, Mark Mellman, a nationally recognized  political consultant, and Bob discuss the role that public preference  polls play in presidential and congressional campaigns, including the  2020 election. Mark explains how polls work and how to  evaluate them. Finally, Mark and  Bob talk about a recent public opinion poll that explores public views  about the U.S. Postal Service.

Mark  Mellman is CEO of the Mellman Group and past president of the American Association of Political Consultants. In addition, Mark has served as a  consultant to CBS News and as a presidential debate analyst for The Wall Street Journal and NPR.