legislation_cosponsors: 109-s-4085, W000779

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
109-s-4085	W000779	Sen. Wyden, Ron [D-OR]	D	OR	2006-12-06	1