BYRON YORK: Big news: New poll shows GOP leading Dems in congressional preference ballot. “It’s an extraordinary turnaround for the GOP. Last July, Democrats held a six-point lead. Last December, Democrats held a 15-point lead. At one point in 2007, Democrats held a 23-point lead, and for all of that year, 2007, Democrats held a double-digit lead. The new Republican lead is the result of a dramatic move of independents toward the Republican party.”