Domain
Politics
Heads of state and government, prime ministers, presidents.
What is in scope
Heads of state and heads of government — Presidents, Prime Ministers, Chancellors, First Ministers, and the equivalents across constitutional systems. Both directly elected positions (the French and Finnish presidencies, Iceland's presidency by direct popular vote) and parliamentary positions (Westminster Prime Ministers, the German Chancellor, the Italian President of the Council of Ministers) are recorded. Appointed cabinet positions sit in a separate domain (Cabinet & Government).
Why this domain matters
Politics is the most visible first-woman category to the public. These appointments make the front page on the day they happen, and the public conversation that follows shapes the cultural reception of the broader pattern.
The domain is also the most diffuse on the selection-mechanism side. Voters in a free election, or party caucuses, or coalition negotiations between parliamentary factions — the mechanisms vary across systems and across appointments. That diffuse mechanism makes politics the hardest place in the dataset to detect coordination from the selection-process record alone, and the easiest to attribute to ordinary electoral progress as a maturing pool of candidates becomes available.
The fact that the rate of first-woman appointments in politics has been least anomalous relative to its long-term baseline reinforces the methodological point made on the analysis page: the dataset's strongest signals are not in the visible electoral domain but in the appointed and quasi-appointed positions where the selection mechanism is more concentrated and the inputs more identifiable.