The prior rating of ATTEMPTED is correct and the adversarial re-check strengthened, rather than overturned, it. The DISCLOSE Act requires 24-hour reporting of >$10,000 expenditures and forces super PACs / dark-money groups to disclose donors (confirmed via Wikipedia DISCLOSE Act) and was folded into the For the People Act (H.R. 1). The House passed H.R. 1 with those provisions on a party-line basis (234-193 on March 8, 2019; 220-210 on March 3, 2021) but it never became law, dying to a Senate filibuster (confirmed via Wikipedia For the People Act). The prior researcher could not retrieve Larsen's individual roll call and inferred his Yea from the party-line pattern; I closed that gap: GovTrack's roll-call record for the 2019 H.R. 1 vote (116th Congress, roll 118) shows Rick Larsen (D-WA-2) voted 'Yea,' and congress.gov's member cosponsorship record shows Larsen directly cosponsored standalone DISCLOSE Act bills (e.g. DISCLOSE Act of 2023, H.R. 1118, sponsored by Cicilline; ~193 cosponsors). So Larsen genuinely voted for and co-signed the measure repeatedly, but it did not land — the definition of ATTEMPTED (+0.25). The outcome is NOT CHAMPIONED: Larsen was one of ~170-190 rank-and-file cosponsors and a party-line voter, never the lead sponsor or floor driver (the champions were Sarbanes, Cicilline, Pappas, Van Hollen), so his sustained support does not rise to actively leading/driving the effort. Applying the same standard to either party, a member who cosponsors a leadership priority among ~180 others and votes for it, without it becoming law, earns ATTEMPTED. Confidence raised from 0.70 to 0.85 because Larsen's participation is now directly documented rather than inferred.