legislation_cosponsors: 119-hr-1061, R000621

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
119-hr-1061	R000621	Rep. Randall, Emily [D-WA-6]	D	WA	2026-01-16	0