Here's a look at what you need to know about the death penalty in the United States.
Facts: Capital punishment is legal in 32 U.S. states.
Approximately 3,108 inmates in 35 states are awaiting execution.
Connecticut, Maryland and New Mexico have abolished the death penalty, but it is not retroactive. Prisoners on death row in those states will still be executed.
Since 1976, when the death penalty was reinstated by the U.S. Supreme Court, 1,352 people have been executed. (as of October 2013)
Japan is the only industrial democracy besides the United States that has the death penalty.
Federal Government: The U.S. government and U.S. military have approximately 63 people awaiting execution. (as of October 2013)
The U.S. government has executed three people since 1976. (as of October 2013)
Females: There are 61 women on death row in the United States. (as of October 2013)
Thirteen women have been executed since the reinstatement of the death penalty in 1976. (as of October 2013)
Juveniles: March 1, 2005 - Roper v. Simmons. The Supreme Court rules that the execution of juveniles is unconstitutional. This means that 16 and 17-year-olds are ineligible for execution.
Twenty-two juveniles between the ages of 16 and 17 were executed between 1976 and 2005.
Clemency: Clemency Processes around the Country
273 clemencies have been granted in the United States since 1976.
For federal death row inmates, the president alone has the power to grant a pardon.
Timeline: 1834 - Pennsylvania becomes the first state to move executions into correctional facilities, ending public executions.
1838 - Discretionary death penalty statutes are enacted in Tennessee.
1846 - Michigan becomes the first state to abolish the death penalty for all crimes except treason.
1890 - William Kemmler becomes the first person executed by electrocution.
1907-1917 - Nine states abolish the death penalty for all crimes or strictly limit it. By 1920, five of those states had reinstated it.
1924 - The use of cyanide gas is introduced as an execution method.
1930s - Executions reach the highest levels in American history, averaging 167 per year.
June 29, 1972 - Furman v. Georgia. The Supreme Court effectively voids 40 death penalty statutes and suspends the death penalty.
1976 - Gregg v. Georgia. The death penalty is reinstated.
January 17, 1977 - A ten-year moratorium on executions ends with the execution of Gary Gilmore by firing squad in Utah.