Russian Social-Democratic Labour Party Second Congress
| Organisations | Delegates |
| 1. ‘Emancipation of Labour’ Group | 1. Plekhanov |
| 2. Deutsch | |
| 2. Iskra organisation | 3. Martov (2 votes) |
| 3. Foreign Committee of the Bund | 4. Hofman |
| 5. Goldblatt | |
| 4. Central Committee of the Bund | 6. Lieber |
| 7. Yudin | |
| 8. Abramson | |
| 5. League of Russian Social-Democrats | 9. Lenin (2 votes) |
| 6. Union of Russian Social-Democrats Abroad | 10. Martynov |
| 11. Akimov | |
| 7. Yuzhny Rabochy group | 12. Popov |
| 13. Yegorov | |
| 8. Petersburg Committee | 14. Gorsky |
| 9. Petersburg Workers’ Organisation | 15. Brouckère |
| 10. Moscow Committee | 16. Byelov |
| 17. Sorokin | |
| 11. Kharkov Committee | 18. Ivanov |
| 19. Medvedev | |
| 12. Kiev Committee | 20. Pavlovich |
| 21. Stepanov | |
| 13. Odessa Committee | 22. Osipov |
| 23. Kostich | |
| 14. Nikolayev Committee | 24. Makhov (2 votes) |
| 15. Crimean Association | 25. Panin (2 votes) |
| 16. Don Committee | 26 Gusev |
| 27. Tsaryov | |
| 17. Association of Mining Metallurgical Workers | 28. Lvov |
| 18. Yekaterinoslav Committee | 29. Lensky |
| 30. Orlov | |
| 19. Saratov Committee | 31. Lyadov |
| 32. Gorin | |
| 20. Tiflis Committee | 33. Karsky (2 votes) |
| 21. Baku Committee | 34. Rusov (2 votes) |
| 22. Batum Committee | 35. Bekov (2 votes) |
| 23. Ufa Committee | 36. Fomin |
| 37. Muravyov | |
| 24. Northern Association | 38. Lange |
| 39. Dyedoy | |
| 25. Siberian Association | 40. Posadovsky |
| 41. Trotsky | |
| 26. Tula Committee | 42. Hertz |
| 43. Braun | |
| Persons with Consultative Voice | |
| 1. Akselrod | |
| 2. Zasulich | Editorial Board of Iskra |
| 3. Starover | |
| 4. Koltsov | Bund |
| 5. Wolf | |
| 6. Stein | Organising Committee |
| 7. Fischer | |
| 8. Warszawski | Polish Social-Democrats |
| 9. Hanecki | |
| 10. Glebov | |
| 11. Strakhov | |
| 12. Yuzhin | |
| 13. Sablina | |
| 14. Kostrov | |