Jeffry A. Frieden and Ronald Rogowski, “The Impact of the International Economy on National Policies: An Analytical Overview,” in Robert O. Keohane and Helen V. Milner, eds., Internationalization and Domestic Politics (New York: Cambridge University Press, 1996), pp. 25-47.
The independent variables in the analysis are the exogenous changes in costs or regards of international economic exchange. The dependent variables are:
1. the policy preferences of relevant socioeconomic and political agents within countries toward national policies and national policy-making institutions.
2. given these preferences, the adoption or revolution of national policies and of national policy institutions
3. given preferences, policies, and institutions, the relationship between a given set of institutions and a given set of policies.
The conjecture is that an exogenous easing of international trade will, ceteris paribus:
1. increase pressure within each country to liberalize international trade and payments, including dismantling structural impediments to trade
2. create such broad political pressure as an increasing function of the degree to which the national economy was previously closed
3. generate such aggregate pressure for change as an increasing function of the degree to which the economy has readily exploitable gains from trade available (such as high levels of total factor productivity).
On average, democratic regimes should liberalize more readily.
Among equally democratic regimes, and among different elective bodies within the same country, the tendency to liberalize should increase as the number of distinct constituencies decreases.
Ceteris paribus, the likelihood of liberalization should decline with increasing partisan fragmentation.