Article Photos: Dem warning: Obama could lose Wisconsin



President Barack Obama waves as he leaves the White House in Washington for a campaign trip to Los Angeles, Calif., Sunday, Oct. 7, 2012. (AP Photo/Manuel Balce Ceneta)

President Barack Obama waves as he leaves the White House in Washington for a campaign trip to Los Angeles, Calif., Sunday, Oct. 7, 2012. (AP Photo/Manuel Balce Ceneta)