Jim Costa (D-CA) serves on the House Committee on Agriculture, which has jurisdiction over the Agriculture sector. Agriculture comprises 24.5% of his identifiable donor base ($1.19M), ranking him #1 among Democrats in his party by donor concentration in this sector.

How we built this: a statistical pattern surfaced from public records — FEC campaign finance, Senate/House Lobbying Disclosure Act filings, and Congress.gov. The donor concentration and the legislative action are concurrent facts; this does not imply contributions caused the action, that the member acted improperly, or that the bill specifically benefits the named sector. Generated July 6, 2026 · internal signal score 74/100.