SAN FRANCISCO — A California judge who was criticized for handing down a short jail term in a case involving a sexual assault at Stanford University is facing a growing number of impediments both inside and outside the courtroom.

Since Judge Aaron Persky of Santa Clara Superior Court sentenced a former champion swimmer for Stanford, Brock Turner, to what is effectively a three-month jail term, a dozen jurors have objected to serving in his courtroom. He was also the subject of a successful motion on Tuesday by the district attorney’s office to stop him from presiding over another sexual assault case.

And since he handed down the sentence, a petition to remove him from the bench has attracted 1.4 million supporters, its organizers say.

Judge Persky’s sentence in the Turner case gained national prominence when the victim released a powerful statement that she had made during the sentencing to BuzzFeed. The statement, which has been read millions of times online, describes her personal anguish during the assault and the trial.