List of tie-breaking votes cast by the vice president of the United States

Under Article I, Section 3, Clause 4 of the Constitution of the United States, the vice president of the United States is the ex officio president of the Senate but may only cast a vote in the Senate to break a tie. As of January 14, 2026, vice presidents have cast a total of 309 tie-breaking votes in the Senate. There are also two tie-breaking votes cast by Chief Justice Salmon P. Chase during the 1868 impeachment trial of President Andrew Johnson, although it is still debated whether he had the authority to do so.