California governor Gavin Newsom has commuted the death sentences of all 548 people on the state's death row to life in prison without the possibility of parole, emptying the largest condemned population in the United States.

In a letter he argued that state sanctioned killing is incompatible with California's values, undermines the legal system and diminishes everyone it touches. He said the death penalty has failed by every measure, cannot be applied fairly, and has put innocent people at risk. Life without parole, he wrote, is the harshest penalty the state can lawfully and ethically enforce.

The step is largely symbolic in practice. California has not executed a prisoner since 2006, and only 13 people have been put to death since voters restored capital punishment in 1978. Newsom already imposed a moratorium in 2019. Experts say commuting the row could still save millions of dollars a year in litigation costs. He acknowledged the decision will anger and hurt some victims' families and said that burden would weigh on him alone.

Politically the timing is pointed. Newsom is term limited and winding down his final months, with fellow Democrat Xavier Becerra projected to succeed him after this week's midterms. The governor has been discussed as a possible 2028 presidential contender, and a blanket clemency on capital punishment will become part of that national audition whether he seeks it or not.

For the prisoners the change means obscurity rather than a lethal chamber. For California it closes a chapter that courts, governors and voters have fought over for decades, replacing the threat of execution with permanent imprisonment.