What punishment did Jack Ruby receive?

Answer 1

In March of 1964 Jack Ruby was convicted of murder with malice and sentenced to death. However, his conviction and sentence were overturned in October of 1966 because an appellate court agreed with his lawyers that his change of venue request before his original trial, in which they argued that he could not receive a fair trial in Dallas due to the publicity of the case, should have been granted. A retrial was scheduled for February of 1967. But Ruby, who believed that powerful people he claimed had framed him to kill Oswald were out to kill him and that he had been injected with cancer cells, was diagnosed with cancer of the liver, lungs and brain in December of 1966. He died three weeks later.

Answer 2

Jack Ruby's penalty was originally death but it was overturned. He died January 3, 1967 from a pulmonary embolism caused by lung cancer.