legislation_cosponsors: 109-sconres-18, D000601

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-sconres-18	D000601	Sen. Dole, Elizabeth [R-NC]	R	NC	2005-03-16	0