Evidence is anything that tends to prove or disprove a material or relevant fact alleged in a lawsuit or other legal proceeding. Witness testimony, documents, contracts, email messages, photographs, medical bills, video images, and voice recordings are common pieces of evidence.
In Arizona, evidence is regulated by both state statutes and the Arizona Rules of Evidence. These rules determine what is considered admissible evidence in a court of law. Evidence must be relevant, meaning it must have any tendency to make a fact more or less probable than it would be without the evidence and the fact must be of consequence in determining the action. Common forms of evidence include witness testimony, documents, contracts, email messages, photographs, medical bills, video recordings, and voice recordings. The admissibility of such evidence is subject to the rules which address issues such as authenticity, reliability, and the potential for prejudice versus probative value. Arizona courts also adhere to the principles of the Federal Rules of Evidence to maintain consistency and fairness in the judicial process.