Content: Typo: "..that if there exists a candidate x such that if for all other candidates y at.." should be "..that if there exists a candidate x such that for all other candidates y at..". (It also seems strange that the rest of the paragraph talks about Condorcet "ruling out" candidates rather than establishing b as the only viable candidate, since Condorcet may "rule out" all candidates in this sense but will only ever select one candidate.)
The following errors are fixed in the second printing of the book and online PDF v1.1