RALEIGH, N.C. - The North Carolina Democratic Party asked voters Wednesday to avoid shopping at dozens of discount retail stores whose parent company, owned by a conservative activist's family, injected hundreds of thousands of dollars into the fall elections to target Democrats. Party leaders set their sights on Variety Wholesalers Inc. executive Art Pope at a news conference, calling him a "right-wing extremist" who sent money to at least three conservative political organizations that have created mailers and ads critical of Democratic incumbents. The party's boycott of the company's North Carolina stores, mostly under the names of Roses, Maxway and...