State Rep. Mike Day of Stoneham has announced that his top aide has taken a new job with the state's Department of Public Health.Day made the announcement on April 6 that Ryan McGeown-Conron, his legislative chief, is leaving."It is with mixed emotions that I share with you all the news that my right hand, Ryan McGeown-Conron, has accepted a new position and will no longer be working as my legislative chief," Day said.