legislation_cosponsors: 113-hr-4258, P000099

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-4258	P000099	Rep. Pastor, Ed [D-AZ-7]	D	AZ	2014-03-14	1