AZ SB1473

Changes the standard for imposing a death sentence from "shall" to "may" impose death if aggravating circumstances are found and no substantial mitigating circumstances exist.

Maintains that prosecution must prove aggravating circumstances beyond a reasonable doubt during the aggravation phase of sentencing.

Maintains that defendant must prove mitigating circumstances by preponderance of the evidence during the penalty phase, and jury members do not need to unanimously agree on mitigating circumstances.

Applies to defendants convicted of first degree murder under section 13-1105, with different provisions for defendants under 18 years of age at time of offense.