legislation_cosponsors: 119-hr-2021, D000530

Cosponsors for tracked legislation. Distinguishes original cosponsors (signed on at introduction) from later additions. Linked to congress_members via bioguide_id.

This data as json

bill_id	bioguide_id	full_name	party	state	sponsorship_date	is_original_cosponsor
119-hr-2021	D000530	Rep. Deluzio, Christopher R. [D-PA-17]	D	PA	2025-03-10	1