General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
Budget of 10 March 1981 tightened fiscal stance by approximately £4bn (about 2% of GDP) at the trough of the 1980-81 recession, through frozen personal tax thresholds in high inflation, North Sea oil taxes, and expenditure restraint. Provoked Letter of 364 Economists (30 March 1981) to The Times warning against. In fact recovery began later that year; Budget is cited as evidence by proponents of expectations-based policy regime.
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.