Jon Lester pitched seven sharp innings, Addison Russell hit a tiebreaking homer and the Chicago Cubs moved one win from their first World Series trip in 71 years by beating the Los Angeles Dodgers 8-4 on Thursday. The Cubs grabbed a 3-2 lead in the NL Championship Series and will have two chances to wrap up that elusive pennant back home at Wrigley Field. ''The city of Chicago has got to be buzzing pretty much right now,'' manager Joe Maddon said.