In 2015, for the fifth consecutive year, at least four in 10 U.S. adults identified as political independents. The 42% identifying as independents in 2015 was down slightly from the record 43% in 2014. This elevated percentage of political independents leaves Democratic (29%) and Republican (26%) identification at or near recent low points, with the modest Democratic advantage roughly where it has been over the past five years. CONT.
Jeffrey M. Jones, Gallup