Independently verified. Padilla was an original co-introducer/cosponsor of S.1, the For the People Act, on March 17, 2021 (the day of introduction) — his own office's press release, dated March 17, 2021, is titled 'Padilla Joins Colleagues to Introduce For the People Act' and contains the exact language the promise is drawn from ('strengthen election security and boost voter turnout'). As California's former chief elections officer he was a natural and vocal advocate. He voted to invoke cloture; the cloture motion failed on a party-line 50-50 vote on June 22, 2021, short of the 60 needed, with Senate Republicans blocking the bill via filibuster (confirmed via Wikipedia's legislative-history record). Padilla then publicly called to end the filibuster to pass it (his June 22, 2021 statement). He sponsored and actively drove the effort beyond a single supporting vote, but the bill was not enacted — so CHAMPIONED (+0.75), not FULL. Under a party-neutral standard, a senator of either party who originally cosponsored a numbered priority bill, voted for cloture, and pushed to change the rules to pass it would earn the same CHAMPIONED label. Confidence trimmed slightly from the prior 0.9 because the prior rationale's 'one of its most vocal advocates' framing modestly overstates his role relative to lead sponsors Merkley/Schumer/Klobuchar; the substantive facts are solid. The prior rating's NPR citation could not be re-verified (repeated fetch failures), so it is replaced here with the independently-confirmed Wikipedia record of the vote.