<P> A third voting rights movement was won in the 1960s to lower the voting age from twenty - one to eighteen . Activists noted that most of the young men who were being drafted to fight in the Vietnam War were too young to have any voice in the selection of the leaders who were sending them to fight . Some states had already lowered the voting age: notably Georgia, Kentucky, and Hawaii, had already permitted voting by persons younger than twenty - one . </P> <P> The Twenty - sixth Amendment, ratified in 1971, prohibits federal and state laws which set a minimum voting age higher than 18 years . As of 2008, no state has opted for an earlier age, although some state governments have discussed it . California has, since the 1980s, allowed persons who are 17 to register to vote for an election where the election itself will occur on or after their 18th birthday, and several states including Indiana allow 17 - year - olds to vote in a primary election provided they will be 18 by the general election . </P> <P> Prisoner voting rights are defined by individual states, and the laws are different from state to state . Some states allow only individuals on probation to vote . Others allow individuals on parole and probation . As of 2012, only three states, Florida, Kentucky and Virginia, continue to impose a lifelong denial of the right to vote to all citizens with a felony record, absent a restoration of rights granted by the Governor or state legislature . However, in Kentucky, a felon's rights can be restored after the completion of a restoration process to regain civil rights . </P> <P> In 2007, Florida legislature restored voting rights to convicted felons who had served their sentences . In March 2011, however, Governor Rick Scott reversed the 2007 reforms . He signed legislation that permanently disenfranchises citizens with past felony convictions . </P>

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