Maryland Gov. Martin O’Malley is expected to sign a bill today that would abolish the death penalty. This makes Maryland the sixth state in the last six years to repeal capital punishment. New Mexico, Illinois, New York, New Jersey and Connecticut have abolished capital punishment and other states, including Nebraska and Delaware have considered similar reforms. There is growing unease among lawmakers across the country that the risk of putting an innocent person to death remains too great. But many argue that the death penalty remains a worthwhile deterrent to violent crime.