He deserves to be tortured first and then die a slow and painful death.

That being said..the "Law" states the death penalty to those that "intend" to kill. In his plea he says he didnt "intend" to kill. But a death has occurred due to his other intent to sexually assault the baby. In such a case the death penalty cannot be given coz thats like saying I intended to get drunk and dive a car but didnt mean to meet with an accident and kill the other person.

He should be judged for the sexual assault of the minor.