Environmental regulation stringency — emissions caps, standards, phase-out mandates, carbon pricing, renewable portfolio standards.
Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Reduction of the Swedish biofuel blending obligation (reduktionsplikt) for diesel and petrol to the EU minimum (6% for 2024-2026) from the prior escalator schedule that had been set to reach 30.5% for diesel by 2030. Stated motives: lower pump prices, reduce cost-of-living burden, avoid over-commitment to imported biofuels. Klimatpolitiska rådet assessed the change as making the national 2030 transport emissions target unreachable.
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.