legislation_cosponsors: 115-sjres-63, M001169

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
115-sjres-63	M001169	Sen. Murphy, Christopher [D-CT]	D	CT	2018-08-28	1