Is it possible to get an expungement from a misdemeanor that happened 15 years ago?

It all depends on what State you are in. In NJ: In all cases, except as herein provided, wherein a person has been convicted of a crime under the laws of this State and who has not been convicted of any prior or subsequent crime, whether within this State or any other jurisdiction, and has not been adjudged a disorderly person or petty disorderly person on more than two occasions may, after the expiration of a period of 10 years from the date of his conviction, payment of fine, satisfactory completion of probation or parole, or release from incarceration, whichever is later, present a duly verified petition as provided in section 2C:52-7 to the Superior Court in the county in which the conviction was entered praying that such conviction and all records and information pertaining thereto be expunged. 1. Notwithstanding the provisions of the preceding paragraph, a petition may be filed and presented, and the court may grant an expungement pursuant to this section, although less than 10 years has expired in accordance with the requirements of the preceding paragraph where the court finds: (1) less than 10 years has expired from the satisfaction of a fine, but the 10-year time requirement is otherwise satisfied, and the court finds that the person substantially complied with any payment plan ordered pursuant to N.J.S.2C:46-1 et seq., or could not do so due to compelling circumstances affecting his ability to satisfy the fine; or (2) at least five years has expired from the date of his conviction, payment of fine, satisfactory completion of probation or parole, or release from incarceration, whichever is later; the person has not been convicted of a crime, disorderly persons offense, or petty disorderly persons offense since the time of the conviction; and the court finds in its discretion that expungement is in the public interest, giving due consideration to the nature of the offense, and the applicant's character and conduct since conviction. In determining whether compelling circumstances exist for the purposes of paragraph (1) of this subsection, a court may consider the amount of the fine or fines imposed, the person's age at the time of the offense, the person's financial condition and other relevant circumstances regarding the person's ability to pay. Although subsequent convictions for no more than two disorderly or petty disorderly offenses shall not be an absolute bar to relief, the nature of those conviction or convictions and the circumstances surrounding them shall be considered by the court and may be a basis for denial of relief if they or either of them constitute a continuation of the type of unlawful activity embodied in the criminal conviction for which expungement is sought. b. Records of conviction pursuant to statutes repealed by this Code for the crimes of murder, manslaughter, treason, anarchy, kidnapping, rape, forcible sodomy, arson, perjury, false swearing, robbery, embracery, or a conspiracy or any attempt to commit any of the foregoing, or aiding, assisting or concealing persons accused of the foregoing crimes, shall not be expunged. Records of conviction for the following crimes specified in the New Jersey Code of Criminal Justice shall not be subject to expungement: Section 2C:11-1 et seq. (Criminal Homicide), except death by auto as specified in section 2C:11-5; section 2C:13-1 (Kidnapping); section 2C:13-6 (Luring or Enticing); section 1 of P.L.2005, c. 77 (C.2C:13-8) (Human Trafficking); section 2C:14-2 (Aggravated Sexual Assault); section 2C:14-3a (Aggravated Criminal Sexual Contact); if the victim is a minor, section 2C:14-3b (Criminal Sexual Contact); if the victim is a minor and the offender is not the parent of the victim, section 2C:13-2 (Criminal Restraint) or section 2C:13-3 (False Imprisonment); section 2C:15-1 (Robbery); section 2C:17-1 (Arson and Related Offenses); section 2C:24-4a. (Endangering the welfare of a child by engaging in sexual conduct which would impair or debauch the moral