Last updated 10:36AM ET
February 16, 2012
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Election 2008
Election 2008
The Presumptive Democratic Nominee....
(2008-06-03)
US Democratic presidential candidate and US Senator Barack Obama (D-IL) waits to speak in Aberdeen, South Dakota
(Associated Press) -

Barack Obama has effectively clinched the Democratic presidential nomination, based on an Associated Press tally of convention delegates.

The tally put Obama over the top Tuesday, ahead of the results from the day's final primaries in Montana and South Dakota. The Illinois senator becomes the first black candidate ever to lead his party into a fall campaign for the White House. Obama outlasted former first lady Hillary Rodham Clinton in a historic contest and now faces Republican Sen. John McCain of Arizona for the
presidency.
© Copyright 2012, Associated Press