Demarchy was first proposed by the Australian philosopher John Burnheim, whose political model removed the need for the state or bureaucracies. These randomly selected groups, sometimes termed "policy juries," "citizens' juries," or "consensus conferences" would deliberately make decisions about public policies in much the same way that juries reach verdicts on criminal cases.
Demarchy attempts to overcome some of the functional problems with conventional Representative democracy, which is often subject to manipulation by special interests and a division between professional policymakers (politicians and lobbyists) vs. a largely passive, uninvolved and often uninformed electorate. According to Burnheim, random selection of policymakers would make it easier for everyday citizens to meaningfully participate, and harder for special interests to corrupt the process.
More generally, random selection of decision makers is known as sortition. The Athenian democracy made much use of sortition, with nearly all government offices filled by lottery rather than by election. In the Canadian provinces of British Columbia and Ontario, a group of citizens was randomly selected to create a Citizens' Assembly on Electoral Reform to investigate and recommend changes to the provinces' electoral systems.
The first area of thinking concerns whether those randomly chosen should replace a representative democracy. In this sense, rather than elect politicians to serve in a representative council and/or senate, people are randomly chosen to fulfill this role. The alternative to this is that representation is dispensed with entirely and those randomly selected are appointed to make decisions within a specific government department or area of responsibility. For example, a person may be selected to make decisions about national defense, or they may be selected to make decisions about the environment—and they do so as part of a group of randomly selected individuals.
The second area of thinking concerns the range and extent of decision-making and focuses upon macro- vs. micro-government. Should demarchy be practiced at a federal/national level only, at a local/community level only, or should it be practiced at every level of government? This issue is important, but focuses more on other issues of democracy that are not necessarily specific to random-selection of decision makers.
The third area of thinking concerns whether those randomly selected should first meet some form of minimum criteria (such as level of education, lack of criminal record, age, and so forth) in order to be selected, or whether anyone should be allowed to be represented. In the former case, some form of meritocracy would apply.
Burnheim's model of demarchy involves the partial or complete dissolution of government departments and bureaucracies, which are replaced by citizen's juries. Demarchy as a concept does not necessitate such a radical step as integral to its purpose.
When one considers how much time and effort politicians and bureaucracies expend in gaining or supporting political strength, the practice of demarchy may be quite efficient. Politicians in western governments spend a good deal of their time either influencing others or being influenced by others. The purpose of this influence is that politicians and lobbyists can achieve their political goals. Because demarchy selects decision-makers randomly, the time and effort spent on politician machinations and manipulation is limited. In theory, therefore, demarchy could be a more efficient system of democracy than having elected officials.
Possible barriers to implementation include:
Political candidates are generally familiar with the issues facing their constituents, and are usually elected based on how the constituents judge their reaction to those issues. A randomly selected jury may not actually be well-educated about the political problems of the day (because they would not be professional politicians) so the culture of a demarchist society would have to change dramatically to educate citizens on complex political issues. Although, without the need to curry favor among potential voters in order to succeed in future elections, they would have little incentive (other than public opinion) to listen to their constituents. There is also little incentive, other than the laws which also apply to existing politicians, for the randomly selected legislators to avoid corrupting the system for personal gain.
Demarchy is designed to make balanced decisions by including a diversity of people in a consensus-forming process. It is unclear how this could be applied to an office which is held by a single person, such as a president. Elimination of such offices would be criticized as leaving the country without clear leadership in times of crisis or military emergency. An alternative to elimination might be the election of the executive by a randomly selected group of people, or a change to a system where the legislature chooses an executive in the form of a prime minister. (Many countries already use the latter parliamentary system of government.)
Demarchy also runs considerable risk of appointing people who are not educated or informed about the issues they have to make decisions on, or people who simply do not care. (For example, a Demarchy would possibly force shopkeepers to make decisions on defense, or the education system). People who are apathetic towards politics may find themselves thrust into a position of power they do not want and cannot wield effectively. Even more dangerous is the prospect of appointing incompetent people to positions of power. Any system that decides who can and cannot be given political power runs the risk of being abused, except for public elections, which of course destroy the whole purpose of a demarchy.
A possible solution for the problem of placing uneducated or unwilling people in power would be to make people apply to be selected, but this does not solve the problem entirely (people could still apply even if they were not really competent).
An example of direct democracy in most democracies is the use of a jury of peers in criminal cases. The jury is normally a body of randomly selected citizens who decide the guilty or not guilty verdict, which is a prime example of direct democracy.
In Alastair Reynolds' Revelation Space series of novels the concept of demarchy has been used to flatten hierarchies. Here, in one of the human factions—the demarchists—everyone is theoretically equal in the realm of government and all major political related issues are voted upon by everyone via neural implant. It should be noted that the "Demarchy" in this society is actually more of a Direct democracy. Joan D. Vinge also uses demarchy in the sense of electronic direct democracy in her 1978 novel The Outcasts of Heaven Belt (later incorporated into The Heaven Chronicles), perhaps the earliest use of the term.
In Kim Stanley Robinson's Mars Trilogy, the Martian government's lower house is selected via Demarchy in the third book Blue Mars.
I mean for example, that it is thought to be democratic for the offices to be assigned by lot, for them to be elected (assigned by vote) oligarchic.