 Chocola returned fire by attacking Donnelly over a late tax filing and attempting to link him to liberal House leader Nancy Pelosi.On November 7, 2006, Donnelly defeated Chocola 54%–46%, a difference of 15,145 votes.The key difference between the 2006 and 2004 elections lay in the results in St. Joseph County, the location of South Bend and by far the district's largest county.