Arizona Demcratic Governor Janet Napolitano is expected to be Obama's secretary of the Department of Homeland Security, reports Politico.

"Napolitano brings law and order experience from her stint as the Grand Canyon State's first female attorney general. One of the nation's most prominent female elected officials, she made frequent appearances on behalf of Barack Obama during the campaign. She was reelected to a second four-year term in 2006.

"Transition insiders have long expected that she would be offered a Cabinet slot, although she had also been mentioned for other posts, including attorney general."