Its a mistake to paint all Conservatives with the same brush.
Richard Viguerie, one of the nation's most prominent conservatives, wrote (in Sojourners Magazine):
"The fact is, I don’t understand why more conservatives don’t oppose the death penalty. It is, after all, a system set up under laws established by politicians (too many of whom lack principles); enforced by prosecutors (many of whom want to become politicians—perhaps a character flaw?—and who prefer wins over justice); and adjudicated by judges (too many of whom administer personal preference rather than the law).
"Conservatives have every reason to believe the death penalty system is no different from any politicized, costly, inefficient, bureaucratic, government-run operation, which we conservatives know are rife with injustice. But here the end result is the end of someone’s life. In other words, it’s a government system that kills people."
and
"The death penalty system is flawed and untrustworthy because human institutions always are. But even when guilt is certain, there are many downsides to the death penalty system. I’ve heard enough about the pain and suffering of families of victims caused by the long, drawn-out, and even intrusive legal process. Perhaps, then, it’s time for America to re-examine the death penalty system, whether it works, and whom it hurts.
Viguerie is one of the founders of the modern American conservative movement.
http://conservativesconcerned.org/