10. Structure of the Direct Primary. (Ray, Introduction to Political Parties and Practical Politics, chapter vi.)
11. How the Direct Primary works. (Cleveland, Organised Democracy, chapter xvii; Woodburn, Political Parties and Party Problems in the United States, chapter xxi.)
12. Effect of the Direct Primary upon party organization. (Holcombe, State Government in the United States, pages 193-204.)
13. Direct nominations. (Reinsch, Readings on American State Governments, pages 383-394)
14. Tyranny of the majority. (Bryce, The American Commonwealth, vol. ii, chapter lxxxiv.)
15. Safeguarding the rights of the minority. (Gettell, Readings in Political Science, pages 322-325.)
16. The nature of proportional representation. (Jones, Readings on Parties and Elections in the United States, pages 164-168; Commons, Proportional Representation.)
17. Objections to the principle of proportional representation. (Gettell, Readings in Political Science, pages 324-325.)
18. Preferential voting. (Massachusetts Constitutional Convention Bulletins, 1917.)
19. The gerrymander. (Woodburn, Political Parties and Party Problems in the United States, chapter xx.)