A budget deficit occurs when a government's expenditures exceed its revenues over a specific period. This financial imbalance can significantly affect national politics, as it might lead to increased national debt and necessitate decisions regarding tax increases or budget cuts. Politicians often grapple with public concerns over deficits, making it a focal point in election rhetoric and policy debates. A persistent deficit can result in loss of public trust, influencing voters' perceptions and potentially shifting power to parties advocating for fiscal responsibility.