Election official Marie Holmes, left, looks over President Obama's drivers license so he can cast his vote during early voting in the 2012 election at the Martin Luther King Community Center, Thursday, Oct. 25, 2012, in Chicago. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

Election official Marie Holmes, left, looks over President Obama's drivers license so he can cast his vote during early voting in the 2012 election at the Martin Luther King Community Center, Thursday, Oct. 25, 2012, in Chicago. (AP Photo/Pablo Martinez Monsivais)