legislation_cosponsors: 115-hr-5485, R000606

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
115-hr-5485	R000606	Rep. Raskin, Jamie [D-MD-8]	D	MD	2018-06-22	0