I stumbled upon an important article by Anthony Downs (1957) on political action in a democracy. I was not aware of this article, but it is very topical these days. It deals with how politicians act, taking into account that they seek income, prestige and power – which is consistent with behavior of other agents in society (according to economic theory).
On the voter’s decision (italics mine):
But, as soon as ignorance appears, the clear path from taste structure to voting decision becomes obscured by lack of knowledge. Though some voters want a specific party to win because its policies are clearly the most beneficial to them, others are highly uncertain about which party they prefer. They are not sure just what is happening to them or what would happen to them if another party were in power. They need more facts to establish a clear preference. By providing these facts, persuaders can become effective.
Now, compare this to how Scott Adams explains the behavior of president-elect Trump:
Trump, the Master Persuader, is rewiring our brains in real time – while we are watching him do it.
However, Down’s paper goes much deeper. I will close with a few quotes.
On informed voters (#falsenews):
Since the cost of voting is very low, hundreds, thousands, or even millions of citizens can afford to vote. Therefore, the probability that any one citizen’s vote will be decisive is very small indeed. It is not zero, and it can even be significant if he thinks the election will be very close; but, under most circumstances, it is so negligible that it renders the return from voting “correctly” infinitesimal. This is true no matter how tremendous a loss in utility income the voter would experience if the “wrong” party were elected. And if that loss – is itself small-as it may be when parties resemble each other closely or in local elections – then the incentive to become well informed is practically nonexistent.
On economists (Hi Paul!):
[…] economic theory has suffered because it has not taken into account the political realities of government decision-making. Economists have been content to discuss government action as though governments were run by perfect altruists whose only motive was to maximize social welfare. As a result, economists have been unable to incorporate government into the rest of economic theory, which is based on the premise that all men act primarily out of self-interest. Furthermore, they have falsely concluded that government decision-making in all societies should follow identical principles, because its goal is always the maximization of social welfare.