legislation_cosponsors: 112-sres-226, C000286

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
112-sres-226	C000286	Sen. Chambliss, Saxby [R-GA]	R	GA	2011-07-07	1