legislation_cosponsors: 99-sconres-105, T000254

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
99-sconres-105	T000254	Sen. Thurmond, Strom [R-SC]	R	SC	1986-02-18	1