Their argument is, "We don't want the government to have the power to take someone's life."
It sounds pretty convincing until you realize the alternative, giving the government the power to steal $25.2 billion from the taxpayer and using it to fund the living expense of murderers and rapists.
Now this is when the talking heads of the LP say the following:
The death penalty is more expensive than life in jail
To which I respond: It doesn't have to be. The cheapest way to do the death penalty is cheaper than the cheapest way to do life imprisonment. The cheapest way to to life imprisonment is free food, healthcare, and shelter for 50 years, with expensive guards. The cheapest way to do the death penalty is a bullet to the head 10 minutes after a guilty conviction. Some innocent people will die, and from the AUP/leftist perspective, they don't care about taxpayer money, but from the libetarian perspective, they are willing to sacrifice a small number of binnocent lives to cut government spending.
So from the libetarian perspective, why would it make sense to be against the death penalty? If they don't care about money, then how are they libetarians? Wouldn't they be members of the green party (or the socialists if they really like guns)?