AP Rep. Carolyn Cheeks Kilpatrick is expected to face a challenge in the Democratic primary while her son, Detroit Mayor Kwame Kilpatrick, battles criminal perjury charges stemming from a text-messaging sex scandal. Democratic state Sen. Martha Scott, whose district includes part of Detroit, tells the Detroit Free Press she plans to officially announce her candidacy Monday. Scott says: "I felt I can do it." Former state Rep. Mary Waters of Detroit has said she planned take on the six-term incumbent in the Aug. 5 primary.

Carolyn Cheeks Kilpatrick is from Detroit and leads the Congressional Black Caucus. She has faced little opposition since she was first elected to Congress in 1996. A message seeking comment from her was left Saturday by The Associated Press.