legislation_cosponsors: 113-s-601, H001069

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	H001069	Sen. Heitkamp, Heidi [D-ND]	D	ND	2013-05-14	0