A Clark County chief deputy district attorney and candidate for Las Vegas Justice Court "didn't exercise good judgment," his boss says, when he vouched for a criminal defendant who handled his advertising and made a sizable contribution to his previous campaign. Clark County District Attorney David Roger said Friday that prosecutor Bernie Zadrowski, head of the bad check unit, showed a lapse of judgment in a January court hearing and is no longer involved with the case in which a former Zadrowski campaign consultant is accused of bilking an elderly victim out of more than $180,000. Zadrowski, a candidate for the newly created Department 10 of Las Vegas Justice Court, insists he did nothing wrong. The defendant, Las Vegas businessman and Republican Party activist Monty Miller, 55, has been in the news recently in connection with a bribery case against Clark County Recorder Frances Deane.