A new book claims that Hillary Clinton's campaign staffers kept an enemies list of Democrats they believe betrayed her by backing Barack Obama during the 2008 presidential campaign. 

According to TIME, her "hit list" included then-Sen. John Kerry, late Sen. Ted Kennedy and two-time presidential hopeful John Edwards, according to excerpts from the book. 

The book is titled HRC: State Secrets and the Rebirth of Hillary Clinton, by The Hill's Amie Parnes and Politico's Jonathan Allen. The book will hit stores on Feb. 11. 

The New York Post reports that the list includes a ranking on a 7-point scale, with 7 being the worst "traitor" in the eyes of Clinton aides, according to the book. 

Kerry, who later succeeded Clinton as President Obama's secretary of state, received a 7. Kerry endorsed Obama after Clinton had recovered from losing the Iowa caucuses to win the New Hampshire primary. 

Other politicians on Clinton's hit list include Sens. Bob Casey, D-Pa., Patrick Leahy, D-Vt., and Jay Rockefeller, D-W. Va., and Reps. Chris Van Hollen, D-Md., and Rob Andrews, D-N.J. 

"Almost six years later most Clinton aides can still rattle off the names of traitors and the favors that had been done for them, then provide details of just how each of the guilty had gone on to betray the Clintons-as if it all had happened just a few hours before," Allen and Parnes write in the book. "The data project ensured that the acts of the sinners and saints would never be forgotten." 

They also add that later, Clinton aides would "would joke about the fates of folks who they felt had betrayed them."

Another expert reads: "'Bill Richardson: investigated; John Edwards: disgraced by scandal; Chris Dodd: stepped down,' one said to another. 'Ted Kennedy,' the aide continued, lowering his voice to a whisper for the punch line, 'dead.'"

The novel details Clinton's relationship with Obama, and how she recovered after her 2008 presidential nominee loss. 

Clinton said she will decide later this year whether she will run for president in 2016.