legislation_cosponsors: 110-hr-4048, F000116

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
110-hr-4048	F000116	Rep. Filner, Bob [D-CA-51]	D	CA	2008-09-22	0