For 10 points, name this action of participating in elections.
Alan Gerber and David Green conducted field experiments on effective ways to persuade people to perform this action. A method named for Jean-Charles de Borda is one way of determining the result of this action. Duverger's law relates the system used for this action to a country's form of government. This action is compulsory in Brazil and Australia. This action is the subject of Condorcet's method and Arrow's impossibility theorem, which states that it is impossible to combine individual preferences for three or more candidates. Some systems of this action are classified as "first-past-the-post." For 10 points, name this action of participating in elections.
Alan Gerber and David Green conducted field experiments on effective ways to persuade people to perform this action.
voting [or word forms; or equivalents like going to vote; or voting systems]