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In many of the city-state democracies and republics, part of the answer to question 3—What political institutions are necessary for governing?—consisted of “factions,” including both informal groups and organized political parties. Much later, representative democracies in several countries developed political parties for selecting candidates for election to parliament and for organizing parliamentary support for (or opposition to) the prime minister and his cabinet. Nevertheless, at the end of the 18th century leading political theorists such as Montesquieu continued to regard factions as a profound danger to democracies and republics. This view was also common at the United States Constitutional Convention, where many delegates argued that the new government would inevitably be controlled and abused by factions unless there existed a strong system of constitutional checks and balances.

Factions are dangerous, it was argued, for at least two reasons. First, a faction is by definition a group whose interests are in conflict with the general good. As Madison put it in “Federalist 10”: “By a faction, I understand a number of citizens, whether amounting to a majority or a minority of the whole, who are united and actuated by some common impulse of passion, or of interest, adverse to the rights of other citizens, or to the permanent and aggregate interests of the community.” Second, historical experience shows that, prior to the 18th century, the existence of factions in a democracy or republic tended to undermine the stability of its government. The “instability, injustice, and confusion introduced into the public councils” by factionalism, Madison wrote, have been “the mortal diseases under which popular governments have everywhere perished.”

Interestingly, Madison used the presumed danger of factions as an argument in favour of adopting the new constitution. Because the United States, in comparison with previous republics, would have many more citizens and vastly more territory, the diversity of interests among its population would be much greater, making the formation of large or powerful factions less likely. Similarly, the exercise of government power by representatives rather than directly by the people would “refine and enlarge the public views, by passing them through the medium of a chosen body of citizens, whose wisdom may best discern the true interest of their country.”

As to political parties, Madison soon realized—despite his belief in the essential perniciousness of factions—that in a representative democracy political parties are not only legally possible, necessary, and inevitable, they are also desirable. They were legally possible because of the rights and liberties provided for in the constitution. They were necessary in order to defeat the Federalists, whose centralizing policies Madison, Jefferson, and many others strongly opposed (see Federalist Party). Because parties were both possible and necessary, they would inevitably be created. Finally, parties were also desirable, because by helping to mobilize voters throughout the country and in the legislative body, they enabled the majority to prevail over the opposition of a minority.

This view came to be shared by political thinkers in other countries in which democratic forms of government were developing. By the end of the 19th century, it was nearly universally accepted that the existence of independent and competitive political parties is an elementary standard that every democracy must meet.

Majority rule, minority rights, majority tyranny

The fear of “majority tyranny” was a common theme in the 17th century and later, even among those who were sympathetic to democracy. Given the opportunity, it was argued, a majority would surely trample on the fundamental rights of minorities. Property rights were perceived as particularly vulnerable, since presumably any majority of citizens with little or no property would be tempted to infringe the rights of the propertied minority. Such concerns were shared by Madison and other delegates at the Convention and strongly influenced the document they created.

Here too, however, Madison’s views changed after reflection on and observation of the emerging American democracy. In a letter of 1833, he wrote, “[E]very friend to Republican government ought to raise his voice against the sweeping denunciation of majority governments as the most tyrannical and intolerable of all governments.…[N]o government of human device and human administration can be perfect;…the abuses of all other governments have led to the preference of republican government as the best of all governments, because the least imperfect; [and] the vital principle of republican governments is the lex majoris partis, the will of the majority.”

The fear of factions was eased and finally abandoned after leaders in various democratic countries realized that they could create numerous barriers to unrestrained majority rule, none of which would be clearly inconsistent with basic democratic principles. Thus, they could incorporate a bill of rights into the constitution (see the English Bill of Rights and the United States Bill of Rights); require a supermajority of votes—such as two-thirds or three-fourths—for constitutional amendments and other important kinds of legislation; divide the executive, legislative, and judicial powers of government into separate branches (see separation of powers); give an independent judiciary the power to declare laws or policies unconstitutional and hence without force of law (see judicial review); adopt constitutional guarantees of significant autonomy for states, provinces, or regions (see federalism); provide by statute for the decentralization of government to territorial groups such as towns, counties, and cities (see devolution); or adopt a system of proportional representation, under which the proportion of legislative seats awarded to a party is roughly the same as the proportion of votes cast for the party or its candidates. In such a multiparty system, cabinets are composed of representatives drawn from two or more parties, thus ensuring that minority interests retain a significant voice in government.

Although political theorists continue to disagree about the best means to effect majority rule in democratic systems, it seems evident that majorities cannot legitimately abridge the fundamental rights of citizens. Nor should minorities ever be entitled to prevent the enforcement of laws and policies designed to protect these fundamental rights. In short, because democracy is not only a political system of “rule by the people” but necessarily also a system of rights, a government that infringes these rights is to that extent undemocratic.

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The spread of democracy in the 20th century

During the 20th century the number of countries possessing the basic political institutions of representative democracy increased significantly. At the beginning of the 21st century, independent observers agreed that more than one-third of the world’s nominally independent countries possessed democratic institutions comparable to those of the English-speaking countries and the older democracies of continental Europe. In an additional one-sixth of the world’s countries, these institutions, though somewhat defective, nevertheless provided historically high levels of democratic government. Altogether, these democratic and near-democratic countries contained nearly half the world’s population. What accounted for this rapid expansion of democratic institutions?

Failures of nondemocratic systems

A significant part of the explanation is that all the main alternatives to democracy—whether of ancient or of modern origins—suffered political, economic, diplomatic, and military failures that greatly lessened their appeal. With the victory of the Allies in World War I, the ancient systems of monarchy, aristocracy, and oligarchy ceased to be legitimate. Following the military defeat of Italy and Germany in World War II, the newer alternative of fascism was likewise discredited, as was Soviet-style communism after the economic and political collapse of the Soviet Union in 1990–91. Similar failures contributed to the gradual disappearance of military dictatorships in Latin America in the 1980s and ’90s.

Market economies

Accompanying these ideological and institutional changes were changes in economic institutions. Highly centralized economies under state control had enabled political leaders to use their ready access to economic resources to reward their allies and punish their critics. As these systems were displaced by more decentralized market economies, the power and influence of top government officials declined. In addition, some of the conditions that were essential to the successful functioning of market economies also contributed to the development of democracy: ready access to reliable information, relatively high levels of education, ease of personal movement, and the rule of law. As market economies expanded and as middle classes grew larger and more influential, popular support for such conditions increased, often accompanied by demands for further democratization.

Economic well-being

The development of market economies contributed to the spread of democracy in other ways as well. As the economic well-being of large segments of the world’s population gradually improved, so too did the likelihood that newly established democratic institutions would survive and flourish. In general, citizens in democratic countries with persistent poverty are more susceptible to the appeals of antidemocratic demagogues who promise simple and immediate solutions to their country’s economic problems. Accordingly, widespread economic prosperity in a country greatly increases the chances that democratic government will succeed, whereas widespread poverty greatly increases the chances that it will fail.

Political culture

During the 20th century, democracy continued to exist in some countries despite periods of acute diplomatic, military, economic, or political crisis, such as occurred during the early years of the Great Depression. The survival of democratic institutions in these countries is attributable in part to the existence in their societies of a culture of widely shared democratic beliefs and values. Such attitudes are acquired early in life from older generations, thus becoming embedded in people’s views of themselves, their country, and the world. In countries where democratic culture is weak or absent, as was the case in the Weimar Republic of Germany in the years following World War I, democracy is much more vulnerable, and periods of crisis are more likely to lead to a reversion to a nondemocratic regime.

Contemporary democratic systems

Differences among democratic countries in historical experience, size, ethnic and religious composition, and other factors have resulted in significant differences in their political institutions. Some of the features with respect to which these institutions have differed are the following.

Presidential and parliamentary systems

Whereas versions of the American presidential system were frequently adopted in Latin America, Africa, and elsewhere in the developing world (where the military sometimes converted the office into a dictatorship through a coup d’état), as European countries democratized they adopted versions of the English parliamentary system, which made use of both a prime minister responsible to parliament and a ceremonial head of state (who might be either a hereditary monarch, as in the Scandinavian countries, the Netherlands, and Spain, or a president chosen by parliament or by another body convoked specially for the purpose). A notable exception is France, which in its fifth constitution, adopted in 1958, combined its parliamentary system with a presidential one.

Unitary and federal systems

In most older European and English-speaking democracies, political authority inheres in the central government, which is constitutionally authorized to determine the limited powers, as well as the geographic boundaries, of subnational associations such as states and regions. Such unitary systems contrast markedly with federal systems, in which authority is constitutionally divided between the central government and the governments of relatively autonomous subnational entities. Democratic countries that have adopted federal systems include—in addition to the United States—Switzerland, Germany, Austria, Spain, Canada, and Australia. The world’s most populous democratic country, India, also has a federal system.

Proportional and winner-take-all systems

Electoral arrangements vary enormously. Some democratic countries divide their territories into electoral districts, each of which is entitled to a single seat in the legislature, the seat being won by the candidate who gains the most votes—hence the terms first past the post in Britain and winner take all in the United States. As critics of this system point out, in districts contested by more than two candidates, it is possible to gain the seat with less than a strict majority of votes (50 percent plus one). As a result, a party that receives only a minority of votes in the entire country could win a majority of seats in the legislature. Systems of proportional representation are designed to ensure a closer correspondence between the proportion of votes cast for a party and the proportion of seats it receives. With few exceptions, continental European countries have adopted some form of proportional representation, as have Ireland, Australia, New Zealand, Japan, and South Korea. Winner-take-all systems remain in the United States, Canada, and, for parliamentary elections, in Britain.

Two-party and multiparty systems

Because proportional representation does not favour large parties over smaller ones, as does the winner-take-all system, in countries with proportional representation there are almost always three or more parties represented in the legislature, and a coalition government (see also coalition) consisting of two or more parties is ordinarily necessary to win legislative support for the government’s policies. Thus the prevalence of proportional representation effectively ensures that coalition governments are the rule in democratic countries; governments consisting of only two parties, such as that of the United States, are extremely rare.

Majoritarian and consensual systems

Because of differences in electoral systems and other factors, democratic countries differ with respect to whether laws and policies can be enacted by a single, relatively cohesive party with a legislative majority, as is ordinarily the case in Britain and Japan, or instead require consensus among several parties with diverse views, as in Switzerland, the Netherlands, Sweden, Italy, and elsewhere. Political scientists and others disagree about which of the two types of system, majoritarian or consensual, is more desirable. Critics of consensual systems argue that they allow a minority of citizens to veto policies they dislike and that they make the tasks of forming governments and passing legislation excessively difficult. Supporters contend that consensual arrangements produce comparatively wider public support for government policies and even help to increase the legitimacy and perceived value of democracy itself.

Here again, it appears that a country’s basic political institutions need to be tailored to its particular conditions and historical experience. The strongly majoritarian system of Britain would probably be inappropriate in Switzerland, whereas the consensual arrangements of Switzerland or the Netherlands might be less satisfactory in Britain.