Once the darlings of the journalistic left, Mark Halperin and John Heilemann are now feuding over what’s left of their once powerful political franchise according to the Washington Post.

Halperin and Heilemann authored  “Game Change,” a best-selling book about the 2008 presidential campaign that was later turned into an Emmy-winning winning HBO movie and a short-lived TV show — “With All Due Respect” — on MSNBC.

That success was undone by sexual harassment allegations leveled against Halperin last year leading to what has become increasingly acrimonious negotiations according to the Post.

For months, Heilemann, 52, and Halperin, 53, have engaged in negotiations over material that was to be part of a follow-up “Game Change” book and TV miniseries about the 2016 presidential campaign. Halperin appears to hold the key to the project: Notes and transcripts of interviews with Donald Trump and his campaign advisers and staff.

But Heilemann has made clear that his collaboration with Halperin is over and that Halperin won’t share in any advances or royalties from anything Heilemann produces, according to people familiar with their negotiations.

The question is, what’s Halperin’s reporting worth?

The two men have been unable to agree on a price for Halperin’s material, which has made it impossible for any project based on it to go forward.

Halperin has lost his job as a regular contributor on MSNBC’s “Morning Joe” as well as his co-host slot with Heilemann on Showtime’s “The Circus” as a result of the allegations and has been unable to revive his once-promising career.

Photo by Gage Skidmore