Jennifer Duffy is a Senior Editor for The Cook Political Report, where she is responsible for U.S. Senate and Governors races.  Duffy has 25 years of experience in campaign politics, the last 22 of which have focused on non-partisan political analysis.  In 1985, she served as Press Secretary for the National Republican Senatorial Committee; she joined The Cook Political Report in 1988 as its first Assistant Editor.  While continuing to work as the Report's contributing editor, Duffy also was a senior account executive with Hill and Knowlton Public Affairs Worldwide and an associate with the lobbying firm of Cassidy & Associates.

In 1995, Duffy rejoined Cook & Company full-time. She served as an off-air analyst for NBC News on Election Nights from 1996 through 2008.  She has been quoted in numerous publications and has appeared on ABC, NBC, CBS, CNN, PBS' "The NewsHour with Jim Lehrer," and C-SPAN's "Washington Journal."

A native of Rhode Island, Duffy received a Bachelor of Arts degree in American Government from Georgetown University in 1985.