legislation_cosponsors: 105-s-2223, A000109

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
105-s-2223	A000109	Sen. Allard, Wayne [R-CO]	R	CO	1998-06-25	1