legislation_cosponsors: 101-s-2786, L000304

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
101-s-2786	L000304	Sen. Lieberman, Joseph I. [D-CT]	D	CT	1990-06-26	1