Many jurisdictions allow a defendant who voluntarily abandons the planned offense to use this abandonment as an affirmative defense to attempt. 1 The defense has two parts. First, the defendant must have a change of heart that is notmotivated by an increased possibility of detection, or a change in circumstances that make the crime’s commission more difficult. As the Model Penal Code states, “it is an affirmative defense that he abandoned his effort to commit the crime…under circumstances manifesting a complete and voluntary renunciation of his criminal purpose…[R]enunciation of criminal purpose is not voluntary if it is motivated…by circumstances…which increase the probability of detection…or which make more difficult the accomplishment of the criminal purpose” (Model Penal Code § 5.01(4)). Second, the abandonment must be complete and cannot simply be a postponement. Under the Model Penal Code, “[r]enunciation is not complete if it is motivated by a decision to postpone the criminal conduct until a more advantageous time or to transfer the criminal effort to another but similar…victim” (Model Penal Code § 5.01(4)). The voluntary abandonment defense gives defendants incentive to stop progressing toward consummation of the offense and prevents the crime from occurring without the need for law enforcement intervention.
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