4.8 Impeachment Evidence-Witness is a type of evidence used in an impeachment trial, which involves witnesses that can provide testimony to support the accusation that a public official has committed an impeachable offense. This evidence can include statements from witnesses who have direct knowledge of the alleged offense, as well as documents, emails, or other forms of evidence that corroborate the witness's testimony. There are two main types of 4.8 Impeachment Evidence-Witness: direct and circumstantial. Direct evidence is testimony from a witness who has firsthand knowledge of the alleged offense. Circumstantial evidence is evidence that implies something has occurred, such as emails or documents that suggest the official acted improperly. This type of evidence is often used to help prove the broader allegation of an impeachable offense.