Trade Theory and Political Coalitions: Rogowski’s Matrix
The Stolper-Samuelson Theorem and Trade Dynamics
According to the Stolper-Samuelson theorem, when a country moves from autarky to free trade, the owners of the country’s abundant factor of production gain, while the owners of the scarce factor lose. This occurs because trade allows countries to specialize in producing the goods for which they have a comparative advantage.
Heckscher-Ohlin Model and Income Distribution
As production expands in export industries, the demand for the abundant factor increases, raising its income. At the same time, industries that rely on the scarce factor face greater foreign competition, reducing the demand and returns for that factor. The Heckscher-Ohlin model explains that countries export goods that intensively use their abundant factors and import goods that intensively use their scarce factors. As a consequence, trade changes the distribution of income within a country, creating both winners and losers.
Impact on Labor and Capital Abundance
For example, a country with abundant labor and limited capital will specialize in labor-intensive products. As exports increase, firms demand more workers, leading to:
- Higher wages
- Better employment opportunities
Capital owners, however, may earn lower returns because capital-intensive industries face stronger competition from imports. Conversely, in a capital-abundant country such as the United States, owners of capital and highly productive export industries generally benefit from trade, while some workers in import-competing manufacturing sectors may experience lower wages or job losses. This distributional effect explains why different social groups often have opposing views on free trade.
Ronald Rogowski: Commerce and Coalitions
Ronald Rogowski’s Commerce and Coalitions builds on the Heckscher-Ohlin model and the Stolper-Samuelson theorem to explain how international trade influences domestic political coalitions. His central argument is summarized in a matrix that classifies countries according to their factor endowments: capital, labor, and land.
The Factor Endowment Matrix
Depending on whether a country is relatively abundant or scarce in these factors, increasing exposure to international trade benefits some groups while harming others. As a result, different political alliances emerge. The matrix identifies four main types of economies based on whether they are:
- Advanced or backward
- Abundant in land or labor
In each case, the winners from trade support free trade and seek greater political influence, while the losers favor protectionist policies. For example, in a capital-rich and labor-rich country, both workers and capital owners benefit from trade, whereas landowners lose. In contrast, in a labor-abundant but capital-poor country, labor gains from trade while landowners and capital owners tend to oppose it.
Political Cleavages and Trade Policy
Rogowski argues that changes in international trade reshape domestic politics because they redistribute income among the owners of different factors of production. Economic winners become politically stronger and organize to promote further trade liberalization. At the same time, economic losers attempt to protect their interests through tariffs, protectionism, or other political measures. Therefore, political cleavages are determined not only by ideology but also by the economic interests created by international trade.
Modern Relevance: Trade Politics in the United States
Rogowski’s matrix remains relevant to present-day America, although the economy is more complex than when the book was written. The United States is generally considered abundant in capital and highly skilled labor. As a result, sectors such as finance, technology, and multinational corporations usually support free trade because they benefit from access to global markets. However, workers in manufacturing industries that face competition from lower-wage countries have often experienced job losses and wage pressure. Many of these groups have therefore supported protectionist policies, such as higher tariffs and restrictions on imports. Recent political debates over trade with China illustrate these divisions. Although globalization has created new complexities, Rogowski’s framework still provides a useful explanation of how trade creates winners and losers and how these economic interests shape political coalitions.