US Senate roll-call votes, newest first by vote date. Each record includes congress + session + vote_number, vote question + result + title + majority requirement, vote date/time, document name (e.g., S. 5, H.R. 4499), document title, grand totals (yeas/nays/present/absent), AND per-party breakdown (D/R/I yea/nay/present/absent counts derived from member-level vote_cast). Filters (all optional, AND-combined): congress, session (1 or 2), result substring, document substring (e.g., 'S. 5'), since/until (vote_date), limit + offset. Locally aggregated from senate.gov XML feeds (refreshed daily). Public-domain US government records.