Should prisoners be allowed to vote?

[Filuwaúrdjan]

However, it is my belief that certain criminals assault the fabric of society so much that they should have their voting rights permanently revoked.  Among these I consider murderers, pedophiles and rapists; all of whom should not see the outside of a prison anyway, egregious corporate criminals-There are others that escape me at the moment 

IIRC people who are convicted of electoral fraud in the U.K have their voting rights permanantly revoked.