Tiny Duffy incites the assassination that this novel centers on, the affair between the main character and Anne, who is married to Dr. Adam Stanton, the main character's assassin as narrated by Jack Burden.  
This novel ends with the narrator resuming his thesis on the papers of Cass Mastern.  Minor characters include the bodyguard Sugar-Boy O'Sheean, and the political opponent Sam MacMurfee.  The main character asks the narrator to learn about Judge Irwin, who later commits suicide.  Tiny Duffy incites the assassination that this novel centers on, the affair between the main character and Anne, who is married to Dr. Adam Stanton, the main character's assassin as narrated by Jack Burden.  FTP, identify this novel about Willie Stark depicting the life of Huey Long, written by Robert Penn Warren.
This novel ends with the narrator resuming his thesis on the papers of Cass Mastern.  
All the King's Men