Letters with ‘suspicious substances’ sent to US senators and election offices BBCAuthorities investigate letters with ‘suspicious substances’ sent to congressional, election offices YahooDel. Elections Commissioner’s office in Dover receives envelope containing powdery substance WDEL.comSuspicious letters sent to election officials weeks before 2026 midterms VotebeatSuspicious materials sent to Schumer, other members of Congress, authorities say The Washington Post
