By JON GASKELL
Capital News Service
LANSING — New polling suggests Democrats have a shot at retaking the House in November. The poll by North Carolina’s Public Policy Polling (PPP) shows Michigan voters prefer Democratic candidates by a 14-point margin, 48-34 percent. Republicans now hold a 63-46 majority in the House, with one vacancy. All seats are up for election in November. The survey of 560 voters, performed from Feb.