FILE - In this Oct. 21, 2008 file photo, then-Democratic presidential candidate Sen. Barack Obama, D-Ill. speaks at a rally at Western Gateway Park in Des Moines, Iowa. Even without a Democratic ... more 
FILE - In this Oct. 21, 2008 file photo, then-Democratic presidential candidate Sen. Barack Obama, D-Ill. speaks at a rally at Western Gateway Park in Des Moines, Iowa. Even without a Democratic challenger, President Barack Obama plans aggressive roles in states with early presidential primaries, especially in the 2012 battleground states of Iowa, New Hampshire and Nevada. less 
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Associated Press | Photo By Alex Brandon, File
Wed, Apr 6, 2011 5:00 PM EDT