The story
- Proto-Indo-European*upó
- Proto-Italic*supo
- Latinsub
- Latinsub-
- Proto-Indo-European*bʰreg-der.?
- Latinsuffrāgō
- Classical Latinsuffrāgium
- Old Frenchsuffrage
- Middle Frenchsuffrage
- Classical Latinsuffrāgium
- Middle Englishsuffrage
- English todaysuffrage
From Middle English suffrage (“prayers or pleas on behalf of another”), from Middle French suffrage (from Old French suffrage) and its etymon Classical Latin suffrāgium (“support, vote, right of voting”). Not related to suffer. The sense of "vote" or "right to vote" was directly derived from Classical Latin.
Etymology from Wiktionary, CC BY-SA 4.0.