Nearly all cases begin in the district (trial) court and there is one district court in every county in Iowa. The district court has general jurisdiction of civil, criminal, juvenile, and probate matters in the state. It is where parties start their lawsuits, prosecutors file criminal charges, trials take place, lawyers offer evidence, witnesses testify, juries deliberate, and judges enter judgments. For purposes of administration, Iowa is divided into eight judicial districts. A chief judge who is selected by the Iowa Supreme Court heads each district.