Democratic voters will be the only ones in McHenry County who will have contested congressional races in the March 20 primary, provided candidates survive petition challenges.

With the end of the congressional filing period Tuesday, both the 6th and the 14th Congressional Districts will have contested Democratic primaries. The 14th District under the new post-census remap will cover all of McHenry County except for Algonquin Township, which will be in the 6th District.

Four Democratic candidates are fighting in the 6th District for the opportunity to take on incumbent U.S. Rep. Peter Roskam, R-Wheaton, in November. Those candidates are Leslie Coolidge of Barrington Hills, Geoffrey Petzel of Lake Zurich, Tim Ritter of Cary, and Maureen Yates of Barrington. The new 6th District includes much of Crystal Lake, Lake in the Hills, Algonquin, Cary and Fox River Grove, as well as parts of Lake, Cook, Kane and DuPage counties.