legislation_cosponsors: 97-sres-390, S000709

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
97-sres-390	S000709	Sen. Specter, Arlen [R-PA]	R	PA	1982-05-13	0