NPR Details Campaign Staff Bets on Polymarket Using Internal Polls, Third Pattern

NPR reported May 7, 2026 that an anonymous campaign staffer said they and coworkers regularly bet on Polymarket using internal polling data before it became public, with winnings described as thousands of dollars per cycle. The report is NPR's third Polymarket-focused insider-trading pattern in three months, as lawmakers and regulators debate responses that largely target government offices rather than campaign staff.