They deserve excruciating pain.
Most likely.
However, to remove the expense of continually having to defend this kind of thing in court, states should implement a nitrogen chamber. Stuff the condemned in the chamber, fill it with nitrogen, wait half an hour, then cart them out. It's simple, cheaper than dirt, completely painless, and quite effective.
My personal lack of confidence in the American legal system causes me to not support the death penalty as fully as I once did, but if you're going to do it, this is the best way. The condemned won't even know he's dead. He drifts off to sleep rather quickly, and wakes up with a demon standing on his chest. If, through some serious miscarriage of justice, an innocent man was convicted, he isn't forced to suffer needlessly, and will get his just reward in the afterlife.
The state shouldn't be at the mercy of drug companies or whackjobs in these instances.
Yea as long as they get the right person.
They deserve hellfire. So do I.
I think we should be satisfied with sending them on their way efficiently. Breathing pure, dry nitrogen for a few minutes will do the job perfectly.
And may God grant them the grace of repentance and conversion ...