legislation_cosponsors: 113-hr-4255, L000562

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-hr-4255	L000562	Rep. Lynch, Stephen F. [D-MA-8]	D	MA	2014-03-14	1