legislation_cosponsors: 112-sres-624, A000368

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-624	A000368	Sen. Ayotte, Kelly [R-NH]	R	NH	2012-12-18	1