The original Constitution did not specifically protect the right to vote—leaving the issue largely to the states. For much of American history, this right has often been granted to some, but denied to others; however, through a series of amendments to the Constitution, the right to vote has expanded over time. These amendments have protected the voting rights of new groups, including by banning discrimination at the ballot box based on race (15th Amendment) and sex (19th Amendment). They also granted Congress new power to enforce these constitutional guarantees, which Congress has used to pass landmark statutes like the Voting Rights Act of 1965. While state governments continue to play a central role in elections today, these new amendments carved out a new—and important—role for the national government in this important area.