Final answer:
The constitutional law professor cannot practice law in front of the courts or run for a state judgeship because they have not passed the bar exam.
Step-by-step explanation:
The most likely reason the constitutional law professor cannot practice law in front of the courts or run for a state judgeship is because the professor has not passed the bar exam. In order to practice law or hold a judicial office, individuals typically need to pass the bar exam, which tests their knowledge and proficiency in the law.
Learn more about Qualification to practice law and hold judicial office