NEWNAN – David Perdue has effectively erased the lead Jack Kingston had enjoyed in the July 22 Republican Senate runoff, according to a survey released Thursday. Perdue told about three-dozen supporters during a campaign stop in this Atlanta suburb that he’s feeling the momentum. The day before, Kingston greeted diners at the Varsity drive-in and also expressed confidence. The poll for Morris News and Fox5 of Atlanta shows Kingston with 43 percent and Perdue with 41, essentially tied since the difference falls within the 2.7 percent margin of error. Another 17 percent remain undecided. InsiderAdvantage conducted the survey by phone...