The number of undecided House races is now at six – following Republican Rep. Mary Bono Mack’s concession late Friday night in her re-election effort in California.

Bono Mack lost to Republican challenger Raul Ruiz after the remaining roughly 4,600 votes were counted.
"Today, I called Dr. Ruiz and congratulated him on his impressive victory,” Mack, who was seeking an eighth full term in the state's Riverside County district, said in a statement.
Ruiz, a physician, thanked Bono Mack for her public service and vowed to represent district residents of all party affiliations when he goes to Washington.