1 indicate more than expected. (C) Ratio of observed to expected bipartisan citations from a permuted null (preserving paper and party distributions) by policy document topic. Thick lines = IQR; thin = 95% CI. Ratios 1 indicate more than expected. Credit: Proceedings of the National Academy of Sciences (2026). DOI: 10.1073/pnas.2523760123"> (A) t-SNE of SPECTER embeddings for all science cited in congressional or think tank documents. Gray = single-party citations; colored = bipartisan. Colors show clusters, with each bipartisan-cited paper assigned to one. (B) Ratio of observed to expected bipartisan citations from a permuted null (preserving paper and party distributions) by field of research. Thick lines = IQR; thin = 95% CI. Ratios <1 indicate fewer, >1 indicate more than expected. (C) Ratio of observed to expected bipartisan citations from a permuted null (preserving paper and party distributions) by policy document topic. Thick lines = IQR; thin = 95% CI.…