Your vote probably will not change the outcome of an election. Only one congressional election and seven state legislative elections in the past 100 years have been decided by one vote — and if it’s that close, the courts are likely to get involved. So why do people vote? (Of course, if everyone thought this way, democracy would be doomed.) I vote out of a sense of “civic duty,” but is that enough to motivate most people? The Swiss provides a clue, and the answer may be surprising.