By Christopher Gavin | Originally posted at boston.com Positioning himself as a moderate, Chris Doughty, a Wrentham businessman, on Wednesday joined the race to succeed outgoing fellow Republican Gov. Charlie Baker, mounting a challenge to Geoff Diehl, a Trump-backed former state representative. In a campaign announcement video, Doughty, president of Capstan Atlantic, a metal gear manufacturer, outlined… Continue reading Boston.com: Chris Doughty, a Wrentham businessman, enters GOP race for governor