The Democratic Congressional Campaign Committee today announced the addition of 13 races to its Red to Blue program, which brings the total number in the program to more than 50.

The races in the benchmark-based, challenger-support program are a signal of where the DCCC sees opportunities for either taking out a GOP incumbent or winning a Republican-held open seat.

The Red to Blue candidates are:

• Assemblywoman Julie Brownley, running in California’s open 26th district;
• State Sen. Alan Lowenthal, running in California’s new 47th district;
• San Diego Port Commissioner Scott Peters, running in California’s 52nd district against Rep. Brian Bilbray (R);
• Retired Maj. Gen. Bill Enyart, running in Illinois’ open 12th district;
• Physician David Gill, running in Illinois’ open 13th district;
• Former state Rep. Mike Obermueller, running in Minnesota’s 2nd district against Rep. John Kline (R);
• Former Congressional aide Hayden Rogers, running in the North Carolina’s open 11th district;
• Former Rep. Carol Shea-Porter, running in New Hampshire’s 1st district, against freshman Rep. Frank Guinta (R);
• Bernalillo County Commissioner Michelle Lujan Grisham, running in New Mexico’s open 1st district;
• Former aide to the New York City public advocate Mark Murphy, running in New York’s 11th district against freshman Rep. Michael Grimm (R);
• Attorney Sean Patrick Maloney, running in New York’s 18th district against freshman Rep. Nan Hayworth (R);
• State Rep. Pete Gallego, running in Texas’ 23rd district against freshman Rep. Francisco “Quico” Canseco (R);
• Former Microsoft executive Suzan DelBene, running in Washington’s open 1st district.