| Singular | Plural | |
|---|---|---|
| Nominativ | suffragium, suffragiumque | suffragia |
| Genitiv | suffragi, suffragiere, suffragii | suffragiumque, suffragiorum, suffragium |
| Dativ | suffragio | suffragiis, suffragiisque |
| Akkusativ | suffragium, suffragiumque | suffragia |
| Ablativ | suffragio | suffragiis, suffragiisque |
| Vokativ | suffragium, suffragiumque | suffragia |