The selection of political leaders by popular vote may be critical for the sustained legitimacy of the governing class. It doesn't necessarily follow, however, that the outcomes of the election process reflect the true preferences of the public, if surveys of voter attitudes and behavior in the US are any guide.
In "The Unpolitical Animal" (The New Yorker,Aug 30, 2004), Louis Menand offers a delightful, and somewhat scary, overview of political science literature on decision-making by American voters.
more »Seventy per cent of Americans cannot name their senators or their congressman. Forty-nine per cent believe that the President has the power to suspend the Constitution. Only about thirty per cent name an issue when they explain why they voted the way they did, and only a fifth hold consistent opinions on issues over time. Rephrasing poll questions reveals that many people don’t understand the issues that they have just offered an opinion on. According to polls conducted in 1987 and 1989, for example, between twenty and twenty-five per cent of the public thinks that too little is being spent on welfare, and between sixty-three and sixty-five per cent feels that too little is being spent on assistance to the poor.

