Yeah, a bunch of them. It was actually a six book series consisting of:
Advise and Consent
A Shade of Difference
Preserve and Protect
Capable of Honor
Come Nineveh, Come Tyre/The Promise of Joy
Come Nineveh, Come Tyre and the Promise of Joy take place at the same time. Capable of Honor ends on a cliffhanger where two people get killed (but he doesn’t tell you who), and Promise of Joy and Come Nineveh, Come Tyre each start with the assumption that it was a different two people.
The later books weren’t bad, they were just really polemical. Drury was really anti-communist, and took the idea that 1960 liberalism and the 1960 press were Soviet dupes, in their criticism of US foreign policy (like Vietnam), their support for anti-colonization movements, and their attempt to say the US and Soviet Union were morally equivalent.
But back to the book and the movie, something I found interesting was that Brig Anderson’s same sex affair was treated a with lot more sympathy in the book than in the movie. In the book, the affair, and Anderson’s same-sex orientation was seen as as a minor flaw in an otherwise good man that, because of the climate of the time and the ruthlessness of his political opponents, destroyed him. It’s treated a lot more harshly in the film.
For example, there’s a scene both in the book and the film where Anderson confronts the man he had an affair with in Hawaii. In both cases, the guy begs him for forgiveness. In the book, the confrontation happens over the phone, and Anderson forgives the guy and tells him he still loves him. In the movie, it takes place outside the 1960s portrayal of a “gay bar”, and it ends with Anderson pushing the guy, knocking him over, and running away.