legislation_cosponsors: 110-hr-5490, D000606

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-5490	D000606	Rep. Davis, David [R-TN-1]	R	TN	2008-04-02	0