The 'nominated for a Nobel Prize' argument is spurious. Don't fall into that trap. ALMOST ANYONE can nominate ANYONE. It's like the Pulitzer Prize. And "Tookie" has zero chance of winning it.
Each year there are 100 to 250 nominees for each prize. Although anyone can be nominated, not everyone can nominate someone for a Nobel Prize. For example the website of the Nobel Foundation says that in the case of the peace prize the following people may nominate:
Members of national assemblies and governments of states
Members of international courts
University rectors
Professors of social sciences, history, philosophy, law and theology
Directors of peace research institutes and foreign policy institutes
Persons who have been awarded the Nobel Peace Prize
Board members of organisations who have been awarded the Nobel Peace Prize
Active and former members of the Norwegian Nobel Committee
Former advisers appointed by the Norwegian Nobel Institute
The bolded is a rather large and heavily liberal group of individuals who have a tendency to politicize everything including, in this case, the Nobel Peace Prize.
I indicated support for his execution. He's a murderer who has never taken responsibility for or shown remorse for his actions, and his clemeny application contains what are probably intentional 'factual inaccuracies' such as "I was convicted by an all-white jury" (racially charged AND false). If the people of California want to be rid of execution, have your lawmakers make it so. There is a process for this.
Asherdan speaks the truth. Society has, basically two methods of crime prevention from the standpoint of dealing with criminals who have been incarcerated: Rehabilitation or Deterrence. We don't demand restitution very often.
We have yet to find an Constitutionally appropriate method of highly effective rehabilitation. On the other hand, execution holds a small possibilty of deterrence for all but one criminal - for the executed, it's 100% but that 100% is also served by life imprisonment.
Repeat sex offenders, offenders against children, and people who kill with intention and malice should be executed because it's clear from experience that these are people who can't contribute to society more than they take away, and warehousing them doesn't hold value. I would give them one opportunity to commit suicide before executing them.
Life imprisonment is expensive. I think if we made prison difficult, uncomfortable and even painful you might see fewer people going there (or maybe fewer returning). I also think that more rich people need to serve meaningful hard time for white collar crimes.