Volume 1Labels, sorting and partisan feeling

Party identification and ideological labels drew closer together in American surveys. The volume asks what the labels contain, in the United States and about 100 countries, how the alignment changed across birth cohorts, and how it differs from partisans' feelings toward the other party.

Volume 2Coalitions and political differences

Participation, group coalitions, issues and attitudes toward institutions and democracy, 1948 to 2024. Party gaps on these measures differ in size and timing, and some reverse with control of the presidency, so no single trend describes them.

Volume 3Votes, giving and places

Election returns, donor records and county data count different populations at different scales. The volume follows the vote from counties to precincts and down the ballot, compares donors with voters, and returns from places to the people who live in them.

Reference

The pages that support the chapters.

Start here
What the book is, the rules of evidence, and three ways to read it.
Data sources
Every dataset the book draws on, with years, weights, license and the chapters that use it.
Glossary
Terms of art, each defined once in plain language.
Figure gallery
Every figure in the book, with its chart type and a link to its chapter.
Methods
Weights, intervals, suppression, ecological inference and survey mode breaks.
Research agenda
Questions the book has planned but not written, by part, with where each is planned to go.
Changes
Chapters published, revised and corrected.
How to cite
BibTeX for the book and its chapters.
For programs
The report of each chapter, its Markdown, the machine copies of the facts and figures, and how to quote an estimate.