legislation_cosponsors: 103-s-2004, M001025

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
103-s-2004	M001025	Sen. Moseley-Braun, Carol [D-IL]	D	IL	1994-03-25	1