legislation_cosponsors: 113-s-601, N000032

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
113-s-601	N000032	Sen. Nelson, Bill [D-FL]	D	FL	2013-05-08	1