By Rosalind S. Helderman Washington Post Staff Writer Prince George's attorney Donna F. Edwards was elected today to the U.S. House of Representatives by voters in Montgomery and Prince George's Counties, becoming the first black woman elected to Congress from the state of Maryland. Live results will appear here after the polls close at 8 p.m. Edwards, who scored an overwhelming victory over eight-term incumbent Rep. Albert R. Wynn (D) in the Democratic primary...Please click on the title to continue reading this entry. ...