One thing I think is important to note is that a lot of these states with death penalties, and especially ohio, are better places to commit murder than some states that favor a life in prison without parole alternative.
A good example is David Maust, who killed a child in the army in Germany, spent 2 years in prison, came to Illinois and killed a 15 year old boy for refusing to have sex with him in a rock quarry. His grand total time for this murder was 15 years behind bars.
He then moved to hammond, Indiana and killed three more boys in 2003, and tried to cement their bodies in his basement.
Now, if he had killed the 15 year old in Iowa, where there is a mandatory life sentance without parole for 1st degree murder or kidnapping, he'd still be in jail and no one would have to worry about him.
Now, clearly, if Maust had been executed in Illinois for the murder, we'd also be OK. The moral of the story is this:
Apparently, the state of Illinois isn't terribly concerned about keeping murderers locked up or preventing them from killing again.
Life in prison without parole is just as effective at preventing recidivism as the death penalty, and works best when mandatory. It's less prone to appeal, and basically means that human vermin are simply locked away and forgotten.
Isn't that what we really want in the first place?