Public Choices and the Political Marketplace

Introduction to Public Choices

Public choices are decisions that affect many people or society as a whole, often made by political leaders or public servants. These choices allocate large quantities of scarce resources and shape key aspects of economic life.

• Public Choice: A decision with widespread consequences, such as tax policy, government spending, or regulation.

• Examples: Setting tax rates, funding national defense, or regulating healthcare markets.

Why Do Governments Exist?

• Establish and maintain property rights to support market transactions.

• Provide nonmarket allocation mechanisms for scarce resources (e.g., public goods).

• Redistribute income and wealth to address equity concerns.

Government Failure

• Government Failure: Occurs when government actions lead to inefficiency, such as overprovision or underprovision of goods and services.

• Can result from poor incentives, information problems, or political pressures.

Decision Makers in the Political Marketplace

• Voters: Express demand for policies through votes and campaign contributions.

• Firms: Seek favorable policies, often via lobbying or contributions.

• Politicians: Supply policies to attract votes and win elections.

• Bureaucrats: Manage public programs, often seeking larger budgets for their departments.

Political Equilibrium

• Occurs when the choices of all groups (voters, firms, politicians, bureaucrats) are compatible, and no group can improve its position by changing its choice.

The Median Voter Theorem and Political Economy

• Politicians often position their policies to appeal to the median voter, similar to how firms in a duopoly might mimic each other's strategies.

• Winners from policies are often concentrated (large per-capita gains), while losers are diffuse (small per-capita losses).

• Example: U.S. sugar growers receive significant benefits per person, while the cost is spread thinly across all Americans.

Classification of Goods

Excludability and Rivalry

Goods and services are classified based on whether people can be excluded from using them and whether one person's use reduces availability for others.

• Excludable: Only those who pay can enjoy the good (e.g., private security, farmed fish, ticketed concerts).

• Nonexcludable: Impossible or costly to prevent anyone from benefiting (e.g., police protection, wild fish, broadcast TV).

• Rival: One person's use reduces the amount available for others (e.g., a can of soda, a fish).

• Nonrival: One person's use does not reduce availability for others (e.g., national defense, TV broadcast).

Four-Fold Classification of Goods

Why Do Governments Provide Private Goods?

• Some goods like healthcare and education are rival and excludable, yet governments provide them due to external benefits and concerns about fairness and efficiency.

• External Benefits: Benefits that spill over to others, such as a more educated society.

Providing Public Goods

The Free-Rider Problem

• Free Rider: Someone who enjoys the benefits of a good without paying for it.

• Public goods create incentives for free riding, leading to underprovision if left to private markets.

Valuing Public Goods

• Value of a Private Good: Maximum amount an individual is willing to pay for one more unit.

• Value of a Public Good: Maximum amount all individuals are willing to pay for one more unit (sum of individual marginal benefits).

• Total Benefit: Dollar value placed on a given quantity of a good.

• Marginal Benefit: Increase in total benefit from a one-unit increase in quantity.

Marginal Social Benefit and Cost

• Marginal Social Benefit (MSB): The sum of all individuals' marginal benefits at each quantity of the public good.

• Marginal Social Cost (MSC): The cost to society of providing one more unit, determined as for private goods.

Efficient Provision of Public Goods

• The efficient quantity is where MSB equals MSC.

• If MSB > MSC, increase provision; if MSC > MSB, decrease provision.

• Private markets tend to underprovide public goods due to the free-rider problem.

• Government provision, funded by taxation, can achieve the efficient quantity.

Political Competition and the Principle of Minimum Differentiation

• Competing political parties tend to propose similar policies to appeal to the majority (median voter).

• This is known as the principle of minimum differentiation.

• Similar behavior is observed in competitive markets (e.g., fast food chains offering similar menus).

Inefficient Overprovision and Bureaucratic Incentives

• Bureaucrats may seek to maximize their department's budget, leading to overprovision of public goods.

• Rationally ignorant voters (those for whom the cost of becoming informed exceeds the benefit) may not oppose such overprovision, resulting in deadweight loss.

The Economics of Healthcare

Why Governments Provide Healthcare

• Healthcare would be underprovided and unfairly distributed if left to the market.

• Three main problems:

  • People underestimate the benefit of healthcare.

  • People underestimate their future needs.

  • Many cannot afford the care they need, especially the long-term sick and aged.

Market Failure in Healthcare

• Marginal social benefit of healthcare exceeds the marginal benefit perceived by consumers.

• Competitive markets underprovide healthcare, resulting in inefficiency and unfairness.

• Deadweight loss occurs when the market equilibrium quantity is less than the efficient quantity.

Alternative Public Choice Solutions

• Public funding levels vary by country (e.g., UK: 83%, Canada: 70%, US: 48%).

• Three main approaches:

  • Universal coverage, single payer: Government funds and chooses quantity (e.g., UK, Canada).

  • Private and government insurance: Mix of private and public funding (e.g., US).

  • Subsidized private insurance: Government provides subsidies to make insurance affordable (e.g., Obamacare).

Universal Coverage, Single Payer

• Everyone is covered; government sets quantity supplied.

• Patients face zero or low price, leading to excess demand and waiting times.

• Deadweight loss may still occur if quantity supplied is less than efficient.

Private and Government Insurance

• Healthcare provided by private doctors/hospitals, funded by private insurance, government, and out-of-pocket payments.

• Quantity provided may exceed the efficient quantity, creating deadweight loss.

Subsidized Private Insurance (Obamacare)

• Subsidies reduce the price paid by consumers and increase the number insured.

• Efficiency depends on whether the subsidy bridges the gap between marginal social benefit and willingness to pay.

Vouchers as an Alternative

• Vouchers can be used to buy specified goods (e.g., health insurance).

• Advantages:

  • Can be used with public or private provision.

  • Government can control total spending.

  • Distributes public contribution across many consumers.

  • Encourages competition and quality among providers.

Review Questions and Key Concepts

1. Government failure can occur with either overprovision or underprovision of goods and services.

2. A good that is rival and nonexcludable is a common resource.

3. The political system is vulnerable to small, concentrated groups with large potential gains.

4. Public goods are nonrival and nonexcludable.

5. The free-rider problem leads to underproduction of public goods.

6. Efficient provision of a good or service requires (marginal cost equals marginal benefit).

7. Healthcare suffers from people underestimating benefits and not being able to afford care.

8. White-collar workers have low loading fees and large benefits from pre-tax premiums in the health insurance market.

Summary Table: Classification of Goods

Key Formulas

• Efficient Provision of Public Good:

• Marginal Social Benefit (vertical sum):

Additional info:

• Deadweight loss refers to the loss of economic efficiency when the equilibrium outcome is not achieved.

• Loading fees in insurance are administrative costs added to the pure premium.