Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Two-step property-tax reversal under the Letta government: suspension of the second IMU instalment on primary residences (D.L. 102/2013, Aug 2013) was followed by full abolition of IMU on primary residences and introduction of TASI (Tassa sui Servizi Indivisibili) service-tax from 2014 (Legge di Stabilità 2014). Net revenue impact approximately neutral but shifted collection channel and political-symbolic coding of property taxation — honouring a core PdL campaign promise.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.