Former Vice President Joe Biden is finally opening up a front against Sen. Bernie Sanders (I-VT) with an ad, airing in South Carolina, accusing the Vermont socialist of trying to launch a primary campaign against then-president Barack Obama, who was running for re-election.
“Bernie Sanders was seriously thinking about challenging our first African-American president in a primary,” a narrator in the ad, targeted at South Carolina’s large contingent of African-American voters, says.

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