legislation_cosponsors: 110-hr-5489, D000603

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
110-hr-5489	D000603	Rep. Davis, Geoff [R-KY-4]	R	KY	2008-03-12	0