# K26 reader data — 2026-09-27

These public R and D downloads accompany forecast 544cf3ed37a6fa857ab40e6977bd056d42cb430b224f107ed383af9d9b2dc31a. Both arms are authorized for public display by K26-RD-PUBLIC-DISPLAY-20260927-001. Computation and issuance provenance is preserved in model_parameters.json; these downloads do not assert that a deployment occurred.

Start with poll_observations and model_inputs, then use input_membership to see the exact role of each observation on each available date. current_poll_weights reproduces today's point estimates before vote-vector closure. party_forecasts and bloc_forecasts contain all available daily outputs; daily_status lists all 90 dates. current_draws and current_seat_distributions provide today’s same 100,000 simulations for both arms. R uses uniform weight_R; D uses normalized weight_D. D probabilities cannot be reconstructed from unweighted counts. See data_dictionary.json for units, nulls, clocks, conditional ranges and scope.

JSON null and CSV empty cells mean unknown, never zero. Source URLs, labels, fieldwork dates, publication dates and sample sizes are included when retained; missing provenance is disclosed, not invented. Source-reported values, deterministic seat zeros, transformed inputs and model estimates remain distinct. A poll appearing in the source table is not automatically used by every list.