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The **paradox of voting** (also called **Downs’ paradox**) is a puzzle in rational choice theory about why people vote at all in large elections.
## Basic idea
formula in the [[theory of abstention]]
[[expected benefit of voting]] ~ 0
[[cost of voting]] = real costs
so the result is always under 0
For a purely self‑interested, rational actor ([[approche rationaliste]],) the conclusion should be:
> It is **irrational to vote** in large elections.
Yet **millions of people do vote**, regularly. That’s the paradox.
## Main implications and responses
To resolve this paradox, scholars have suggested:
- **Expressive motivations**: people vote not to change the outcome, but to _express_ their identity, values, or group loyalty (voting as expressive behavior).
- **[[normes sociales|Norms]] and duty**: people get utility from fulfilling a sense of **civic duty** (“a good citizen votes”), so the “benefit” includes moral/psychological satisfaction.
- **Altruism / collective benefit**: individuals may care about the welfare of others; even a tiny probability of affecting a large collective benefit can justify voting.
- **Social pressure and reputational concerns**: people may fear disapproval if they don’t vote, or seek esteem by participating.
## Notes de bas de page
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