<p>If they defer you, you are automatically considered for regular decision and you can send in updated scores. If they reject you, no, you cannot apply for regular decision.</p>
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<p><a href=“http://www.princeton.edu/admission/applyingforadmission/single-choice-early-actio/”>http://www.princeton.edu/admission/applyingforadmission/single-choice-early-actio/</a></p>