Direct answer: Elections for Congress in the United States are held every two years on Election Day in November. In 2025, several congressional events may occur, including potential special elections to fill vacancies in the House, but the regular biennial congressional elections (for all House seats and a third of the Senate) are scheduled for November 2026, not 2025. For active, year-specific voting dates, check your state or local election office because dates can vary for specials and local contests. If you want the exact dates for any 2025 congressional specials or state-level contests, I can look them up and confirm with official sources.