(NEXSTAR) – The United States is just weeks away from a highly-anticipated presidential election, but not everyone will be able to exercise their right to vote on Nov. 5.

Being at least 18 years old and a U.S. citizen are general requirements for voting, but individual states have their own laws that prohibit voting for a number of reasons.

Convicted felons

In all jurisdictions except Maine, Vermont and the nation's capital, people convicted of felony crimes lose the right to vote while incarcerated.

In half the states, felony voting restrictions extend after incarceration, often including their time on probation or parole, according to the National Conference of State Legislatures (NCSL). In some states, convicted felons lose their voting rights indefinitely for certain crimes.

In recent years there has been a general trend toward reinstating the right to vote at some point.

Inmates in the following states won't receive automatic restitution upon release, but........

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