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Crowds erupt with excitement during President-elect Obama's pre-inauguration rally in Wilmington, Delaware, where thousands braved sub-zero temperatures to lend their support. Obama, Vice President-elect Biden and their families traveled by train on a Whistle Stop Tour, opening Inauguration celebrations with rallies in Philadelphia, Wilmington, and Baltimore before their final arrival in Washington, D.C. The inauguration takes place on January 20, 2009, swearing Obama in as the 44th President of the United States of America.¬? ?Ä®?Ä®.