The 1928 Hamburg state election was held on 19 February 1928 to elect the 160 members of the Hamburg Parliament.[1]
| Party | Votes | % | Seats | +/– | |
|---|---|---|---|---|---|
| Social Democratic Party of Germany | 246,685 | 35.9 | 60 | –3 | |
| Communist Party of Germany | 114,257 | 16.7 | 27 | 0 | |
| German National People's Party | 94,048 | 13.7 | 22 | –3 | |
| German Democratic Party | 87,553 | 12.8 | 21 | +5 | |
| German People's Party | 85,507 | 12.5 | 20 | +2 | |
| Mittelstands-Partei | 20,136 | 2.9 | 4 | –2 | |
| Nazi Party | 14,760 | 2.2 | 3 | +1 | |
| Centre Party | 9,402 | 1.4 | 2 | 0 | |
| Reich Party for Civil Rights and Deflation | 5,609 | 0.8 | 1 | 0 | |
| Angestellte und Beamte | 1,598 | 0.2 | 0 | New | |
| Rechtspartei für Aufwertung und Recht | 1,331 | 0.2 | 0 | New | |
| Freiwirtschaftliche Arbeitspartei | 1.038 | 0.2 | 0 | New | |
| Internationale Kommunisten | 738 | 0.1 | 0 | New | |
| Mieterschutz-Wohnungsnot | 714 | 0.1 | 0 | New | |
| Deutsche Reformpartei | 713 | 0.1 | 0 | New | |
| Independent Social Democratic Party of Germany | 706 | 0.1 | 0 | New | |
| Völkischsozialer Block | 669 | 0.1 | 0 | New | |
| Wohnungssuchende und Neubaumieter | 551 | 0.1 | 0 | New | |
| Hermann Abel | 201 | 0.0 | 0 | New | |
| Republikanische Partei Deutschlands | 114 | 0.0 | 0 | New | |
| Invalid/blank votes | 5,636 | – | – | – | |
| Total | 691,966 | 100 | 160 | 0 | |
| Registered voters/turnout | 876,371 | 79.0 | – | – | |
| Source: Elections in the Weimar Republic | |||||