legislation_cosponsors: 111-sres-689, F000457

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-sres-689	F000457	Sen. Franken, Al [D-MN]	D	MN	2010-11-19	1