legislation_cosponsors: 119-hr-2675, B001322

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-2675	B001322	Rep. Baumgartner, Michael [R-WA-5]	R	WA	2025-10-31	0