It was 35 years ago that Jane Byrne pulled off the most stunning political upset in Chicago history. Jay Shefsky has the story of an insider who turned against the machine.

• Chicago Week in Review: 2/28/79: Byrne Beats Bilandic

In this special edition of Chicago Week in Review, Joel Weisman and his guests discuss Jane Byrne’s shocking victory over incumbent Mayor Michael Bilandic in the Democratic mayoral primary. Although the show premiered in 1978, this is the earliest tape of the program found in the WTTW archives.

NOTE: Portions of this recording have slight technical difficulties due to the age of the tape. Please be patient.

View a timeline of Byrne's career.

--Timeline by Taurean Small