ADVANCE FOR USE SATURDAY, JULY 21 AND THEREAFTER - This photo taken April 14, 2011, shows Senior adviser David Plouffe on the South Lawn of the White House as he accompanies President B

 

              ADVANCE FOR USE SATURDAY, JULY 21 AND THEREAFTER - This photo taken April 14, 2011, shows Senior adviser David Plouffe on the South Lawn of the White House as he accompanies President B
ADVANCE FOR USE SATURDAY, JULY 21 AND THEREAFTER - This photo taken April 14, 2011, shows Senior adviser David Plouffe on the South Lawn of the White House as he accompanies President Barack Obama to Chicago. Obama's 2008 campaign manager is helping shape the president's re-election strategy from the West Wing. The Delaware native returned to Obama's side after Democrats lost control of the House in the 2010 elections and is arguably the most important person in melding Obama's policies with politics. (AP Photo/Charles Dharapak)