System A
Presidential
The chief executive is elected independently of the legislature, either directly by voters or through an electoral mechanism separate from legislative confidence.
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Comparative Democracy · Interactive Comparison
Presidential vs. Parliamentary Systems
Compare two major democratic arrangements by asking the same institutional questions: who selects the executive, who can remove it, and how legislative authority is connected to government.
Compare the systems ↓Compare One Dimension at a Time
Different systems answer the same democratic problems differently.
Select a dimension below. The comparison intentionally describes ideal types; actual constitutions combine features in many different ways.
Institutional questionWho gives the executive its democratic mandate?
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System B
Parliamentary
The head of government emerges from, and normally depends on, the parliamentary majority or governing coalition.
Do not confuse system type with democratic quality.
Both presidential and parliamentary arrangements can sustain strong democracies, and both can experience institutional failure. Constitutional design interacts with parties, electoral systems, political culture, federalism, courts, and other institutions.
Beyond the Binary
Real constitutions exist on a broader institutional spectrum.
Semi-presidential systems divide executive authority between a directly elected president and a prime minister responsible to parliament. Parliamentary systems also vary in head-of-state powers, confidence rules, electoral systems, coalition practices, and dissolution procedures.
Sources & Further Reading
Compare constitutions in context.
International IDEADemocratic institutions and constitution-building resources→
Inter-Parliamentary UnionParliaments, comparative data, and democratic institutions→
Constitute ProjectSearch and compare constitutional texts→
The comparison uses broad institutional ideal types for learning. Individual countries may combine presidential, parliamentary, semi-presidential, federal, monarchical, and other constitutional features in ways that require country-specific analysis.