Lumping capital punishment in with abortion and euthanasia is skewing the results here. There is no official Catholic position against the death penalty and never has been. It remains an opinion, held by the current Pope and many of his predecessors, and much of the hierarchy in general, but you can support the death penalty for certain crimes and remain a faithful Catholic. Not so for abortion and euthanasia.
Mr. Bergoglio pronounced the death penalty “inadmissible” ... a contradiction of Scripture and Doctrine.