Political Business Cycles

The economy fluctuates, and politicians seek to use these fluctuations to their advantage. The theory of political business cycles explores the relationship between the electoral process and economic policy.

Classical Theory (Nordhaus)

In 1975, William Nordhaus proposed an opportunistic political cycle model:

Assumptions:

Voters make decisions based on economic results — especially just before elections
There is a short-term trade-off between inflation and unemployment (Phillips curve)
Politicians seek re-election and manipulate the economy

Cycle Logic:

Immediately after the elections, the government implements unpopular measures (combating inflation, cutting expenditures)
Unemployment rises, inflation falls
Before the next elections — economic stimulation
Unemployment declines, growth accelerates
After elections, inflation appears, and the cycle repeats

Result: The economy systematically deviates from optimum. Excessive inflation, suboptimal fluctuations.

Partisan Cycles (Hibbs)

Douglas Hibbs proposed an alternative model based on ideological differences between parties:

Left-wing parties represent the interests of labor, for whom unemployment is the main evil. They prefer stimulative policy, even at the cost of higher inflation.
Right-wing parties represent the interests of capital and the middle class, for whom inflation is more dangerous. They prefer strict (restraining) policy.

Cycle: Entry of left-wing → stimulation → growth → inflation; entry of right-wing → restraint → recession → low inflation.

Empirics: There is evidence of partisan differences in policy, but they are weaker than the theory predicts.

Globalization and independence of central banks have narrowed the possibilities for partisan cycles.

Rational Models (Alesina)

Models with rational expectations modify the classical predictions:

Rational opportunistic cycles (Rogoff). Voters are rational, but asymmetrically informed. Politicians signal their competence through budget manipulations before elections.
Rational partisan cycles (Alesina). Uncertainty of election outcome creates real effects. If firms and workers sign contracts without knowing which party will win, the election result has a real impact at the start of the term.

Predictions: Partisan effects are stronger at the beginning of the term and weaken as expectations adapt.

Empirical Evidence

What does the data say about political cycles?

Developed democracies:

Opportunistic cycles are weak — voters are not so naive, politicians are constrained by institutions
Some evidence of partisan differences, especially at the beginning of terms
Independence of central banks has weakened opportunities for manipulation

Developing countries:

Political cycles are stronger — institutions are weaker, voters are more naive
Fiscal manipulations before elections are widespread
IMF and international markets limit manipulations

Manipulation instruments:

Monetary policy (where the central bank is dependent)
Fiscal policy — increased spending, lowered taxes
Targeted transfers — pensions, subsidies, “gifts” before elections
Delay of unpopular decisions

Voting on Economic Results

The reverse side — how does the economy affect voting?

Retrospective voting. Voters evaluate the incumbent by results: good economy — re-election, bad — change of power.

Economic voting:

Egocentric: voting based on one’s own financial situation
Sociotropic: voting based on assessment of the national economy

Empirically, sociotropic voting is stronger.

Voter myopia. Voters attach greater weight to recent economic results. This creates incentives for pre-election manipulations.

Attribution. Voters may “punish” the government for global shocks it cannot control (oil prices, world crises). Or “reward” for luck.

Institutional Constraints

How to limit political manipulation of the economy?

Independent central bank. Isolation of monetary policy from political pressure. Empirically: independent central banks are associated with lower inflation.
Budget rules. Limits on deficit, debt, spending. But rules are often circumvented or violated.
Fiscal councils. Independent bodies assessing budgetary policy. Provide information, increase transparency.
International obligations. Membership in IMF, EU, treaties restrict freedom of maneuver.

Political business cycles are not an inevitability, but the result of institutional design. Proper institutions can minimize political distortions of economic policy.