By Justin Wingerter Staff Writer jwingerter@oklahoman.comWhen the 116th session of Congress begins in January, it will include something the previous three sessions did not: a Democrat from Oklahoma. Since Dan Boren's retirement in early 2013, the Oklahoma delegation has been all-Republican, a characteristic that will change when Rep.-elect Kendra Horn is sworn in to represent the Oklahoma City area.Read more on NewsOK.com