Part III comprises the more detailed arguments about Carroll's reasoning, and Part IV contains reprints of rare original material on proportional representation by Carroll, James Garth Marshall, and Walter Baily.

1. The Life and Logic of Lewis Carroll.- 1.1 Government by Logic.- 2. The Principles of Parliamentary Representation.- 2.1. An Outline of Carroll’s Argument..- 2.2. The Central Argument in The Principles of Parliamentary Representation.- 2.3. Carroll and the Cambridge Mathematical School of PR: Arthur Cohen and Edith Denman.- 3. An Analysis of Carroll’s Argument.- 3.1. Carroll’s Scheme of Proportional Representation.- 3.2. The Desiderata: In at the Deep End.- 3.3. The Droop Quota in a Two-Party System.- 3.4. The Representation of the Droop Quota.- 3.5. Walter Baily and the Number of Voters Unrepresented.- 3.6. J G Marshall and the Two-Person Zero-Sum Game.- 3.7. Demand Curves, Maximin, and the d’Hondt Scheme of PR.- 3.8. The Fourfold Table and Carroll’s Quota, Q(s).- 3.9. Carroll’s Practical Scheme and the Single Transferable Vote.- 3.10. Allocating Members to Districts.- 4. Reprints of Original Material.- 4.1. Lewis Carroll: The Principles of Parliamentary Representation, with Supplement and Postscript to Supplement.- 4.2. James Garth Marshall: Minorities and Majorities; Their Relative Rights.- 4.3. Walter Baily: Proportional Representation in Large Constituencies.

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