TRENTON -- Phil Murphy, the Democratic nominee for New Jersey governor, will announce he has chosen former state Assembly Speaker Sheila Oliver to join his ticket as candidate for lieutenant governor, a source with knowledge of the selection process told NJ Advance Media. Murphy, a retired Wall Street executive and former U.S. ambassador to Germany under President Barack Obama, is expected to formally announce the pick as early as Wednesday, according to the source, who is not authorized to publicly discuss the choice and requested anonymity.