Here are the key events in the case involving Virginia Democrats' conference calls.

March 22, 2002: Gov. Mark R. Warner, Democratic Party leaders, legislators and their attorney hold a telephone conference to discuss strategy in a court battle over state political boundaries.

March 25: Second Democratic conference call is held. Warner does not participate.

April 9: Edmund A. Matricardi III resigns as executive director of the state Republican Party after a Richmond Circuit Court grand jury indicts him on charges that he eavesdropped on the Democrats' calls and tried to disseminate what he learned.

April 17: The probe widens as investigators find the cell phone number of Claudia D. Tucker, chief of staff for then-House Speaker S. Vance Wilkins Jr. (R-Amherst), among numbers logged in to the March 25 Democratic conference call.

April 21: Wilkins puts Tucker on paid leave pending the outcome of the investigation.

May 14: State charges against Matricardi are dropped as federal investigators take over.

Jan. 22, 2003: Tucker pleads guilty to a federal misdemeanor and is sentenced to a year of probation and fined $1,000.

Jan. 23: Matricardi is indicted on five federal charges related to the eavesdropping. He resigns as operations director of the South Carolina Republican Party.