The volunteers were able to impact the outcome of the 2008 presidential election.
A presidential election is the election of any head of the state whose official title is President.
Obama became the first African American to be elected to the presidency, as well as being only the third sitting United State senator elected president, joining Warren G. Harding and John F. Kennedy.
In December 2007 the U.S.economy officially slipped into recession spurred particularly by the decline in the housing market and the subprime mortgage crisis and worsened by the collapse of the global financial services firm Lehman Brothers in September 2008. Learn more about 2008 presidential election here:
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