legislation_cosponsors: 111-s-3306, K000373

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
111-s-3306	K000373	Sen. Kaufman, Edward E. [D-DE]	D	DE	2010-05-06	0