allen davis, a man who bounced in and out of prison for years, kidnapped and killed 12-year-old polly klass. it was aimed at locking up dangerous, violent felons for good. but it also resulted in decades long sentences for drug addicts such as robert, with previous burglary and robbery convictions, he was sentenced to 50 years to life. >> that's why i wanted to commit suicide. i mean it's 50 years. the hardest days for me in here, when a guy that has committed a murder, and he goes home doing less time than me. i've never shot a gun, never put my hands on anybody physically. i've caused harm. i've hurt people, not 50 years' worth. >> reporter: governor jerry brown is now pushing a ballot measure that could change roberts' life. proposition 57 aims to release some inmates before their full term, thereby reducing the prison population and removing the system from federal control. >> the supreme court says prison conditions are terrible. it's overcrowded. people are committing suicide. they have unconstitutional medical care. now we're putting a cap and you got to take out thousands of people