legislation_cosponsors: 113-s-601, B001236

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
113-s-601	B001236	Sen. Boozman, John [R-AR]	R	AR	2013-05-13	1