Tennessee’s State Constitution says that state court judges should be chosen by popular vote, but the state has not been holding such elections in recent years, and depends on appointing judges. This article describes John Jay Hooker’s attempts to win a ruling in state court that the state constitution should be followed. The article also explains that defenders of judicial appointment are hoping to win a popular vote in November 2014 to change the state constitutional provisions on judicial selection.
Independent of that, and not mentioned in the article above, a federal court will hear a case on January 30, filed by Herbert Moncier, who wants to run for a judicial position. That case is Moncier v Haslam, eastern district, 3:13cv-630. Here is an article about the federal case.