legislation_cosponsors: 113-hr-4615, M001180

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-4615	M001180	Rep. McKinley, David B. [R-WV-1]	R	WV	2014-05-08	1