legislation_cosponsors: 114-s-2957, B001230

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
114-s-2957	B001230	Sen. Baldwin, Tammy [D-WI]	D	WI	2016-12-07	0