Yesterday:

President Barack Obama speaks during a campaign stop at RiverLoop Amphitheatre at the Waterloo Center for the Arts, Tuesday, Aug. 14, 2012, in Waterloo, Iowa. The president is on a three-day campaign bus tour through the state. (AP Photo/Charlie Neibergall)

And today:

US President Barack Obama delivers remarks during a campaign event at the Alliant Energy Amphitheater in Dubuque, Iowa, August 15, 2012, during his three-day campaign bus tour across the state. (AFP PHOTO/Jim WATSON)

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