legislation_cosponsors: 112-s-3678, H001049

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
112-s-3678	H001049	Sen. Hagan, Kay R. [D-NC]	D	NC	2012-12-17	0