Veto power functions within a legislative system as a formal mechanism by which an executive authority (such as a president or governor) can reject legislation passed by the legislature. This power acts as a critical check on legislative authority, ensuring that proposed laws undergo scrutiny and align with the executive's vision or policy priorities. The veto can stimulate further negotiation or compromise between branches of government. In some systems, legislatures may override a veto with a supermajority vote, illustrating the balance of power within governance and the role of various actors in the legislative process.