legislation_cosponsors: 110-hr-6316, M000312

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
110-hr-6316	M000312	Rep. McGovern, James P. [D-MA-3]	D	MA	2008-06-19	1