Latvia: Polity Style: 1918-1920
| 17 Dec 1918 | declaration of Soviet republic |
| 17 Dec 1918 - 15 Jan 1919 | Latvijas Padomju Republika | Latvian Soviet Republic |
| 15 Jan 1919 - 3 Jan 1920 | Latvijas Sociālistiskā Padomju Republika | Latvian Socialist Soviet Republic |
| 3? Jan 1920 | polity ceased to exist with the government leaving national territory |