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The sometimes fleeting status of Roll Call’s Most Vulnerable Incumbent list

Political Theater, Episode 408

Sens. Bill Cassidy, R-La., left, topped Roll Call's Most Vulnerable Incumbent senator list for a few days before losing his primary. Sen. Susan Collins, R-Maine, right, came in at No. 2 on the list and faces a competitive general election contest.
Sens. Bill Cassidy, R-La., left, topped Roll Call's Most Vulnerable Incumbent senator list for a few days before losing his primary. Sen. Susan Collins, R-Maine, right, came in at No. 2 on the list and faces a competitive general election contest. (Tom Williams/CQ Roll Call file photo)
By Jason Dick, Mary Ellen McIntire and Daniela Altimari
Posted May 18, 2026 at 5:52pm

It’s been a weird election cycle, and one only has to look at Roll Call’s Most Vulnerable Incumbents list to see the multiple storylines playing out. Jason Dick talks with Mary Ellen McIntire and Daniela Altimari about who’s on the list, who’s leaving the list and why making a House list is so difficult. (Spoiler alert: It’s redistricting.)

Show Notes:

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