In a time when politicians and their vocal followers have camped themselves behind increasingly rigid battle lines, U.S. Rep. John Barrow seeks to blaze his own trail.That independent streak gets Barrow, D-Ga., admiration and derision, depending on who is talking.Barrow, who first was elected to represent Georgia’s 12th Congressional District in 2004, is in a dogfight with state Rep. Lee Anderson, R-Grovetown, to win a fifth term. The race has garnered national attention because Republicans see it as a strong opportunity to gain a seat in the U.S. House after the GOP-controlled state Legislature redrew the district’s boundaries to cut out Democratic-leaning Savannah, which had been Barrow’s home base, and include more Republican-leaning rural areas. Barrow moved to Augusta in March to stay within the new district.Barrow, 56, is the last white Democratic congressman in the Deep South.