A Civil Campaign: A Comedy of Biology and Manners[a] is a science fiction novel by American writer Lois McMaster Bujold, first published in September 1999.

Initially excited to become reacquainted with former lover Lady Donna, he is stunned to discover she is now a man, but nevertheless helps him in his efforts to become the next Count Vorrutyer.

On the eve of the voting for both countships, Richars sends his henchmen to castrate his rival, but the attempt is foiled by Ivan Vorpatril and Olivia Koudelka.

The next day, when the plot is revealed to the council of counts before the voting for both seats, Richars loses the support of the leaders of the conservative faction, who are annoyed, not by the attempted crime, but by his bungling of it.

The various romantic threads are resolved: Emperor Gregor of Barrayar's wedding goes off without a hitch; Martya Koudelka becomes involved with Enrique Borgos; Olivia Koudelka becomes engaged to Count Dono; Kareen gets her parents to agree she and Mark each have a year's "option" on each other and can explore their relationship openly; and Ivan's mother's relationship with former ImpSec head Simon Ilyan is grudgingly accepted by Ivan.

[12] The SF Site (reviewing the audiobook) lauded it as an excellent example of a Regency romance within science fiction, with "absolutely wonderful character moments for everybody, not just the romantic leads", and "one of the best love letters (...) this side of Persuasion".

[13] Infinity Plus praised Bujold's "subtle plotting and genuine wit", calling it "truly superior farce, rich with incident and characters" and faulting it only for the extent to which it benefits from a familiarity with the previous Vorkosigan novels.

In particular, Morgan emphasized that "(t)here's no suggestion that [Donna] wants to be a man for any reasons other than to secure the title [of Count], and for intellectual curiosity", and that "(f)or [Dono], changing gender is just a lifestyle choice."