legislation_cosponsors: 100-sres-476, C000356

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
100-sres-476	C000356	Sen. Chiles, Lawton [D-FL]	D	FL	1988-09-20	1