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A view of the of the White House early October 24, 2012 in Washington, DC. Republican White House hopeful Mitt Romney and US President Barack Obama barnstormed across toss-up states while seeking swing votes two weeks before election day. With their debates behind them, the candidates raced out of the blocks and onto the campaign trail, hoping to corral the most ballots from the shrinking pool of Americans still undecided in a race heading for a photo finish. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
A view of the of the White House early October 24, 2012 in Washington, DC. Republican White House hopeful Mitt Romney and US President Barack Obama barnstormed across toss-up states while seeking swing votes two weeks before election day. With their debates behind them, the candidates raced out of the blocks and onto the campaign trail, hoping to corral the most ballots from the shrinking pool of Americans still undecided in a race heading for a photo finish. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)

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Report: Explosion may have caused DC power outages

Power outages in Washington might have been caused by a small explosion at a power transfer line in Maryland, a U.S. official tells CNN's Jim Sciutto.

Report: Explosion may have caused DC power outages

Power outages in Washington might have been caused by a small explosion at a power transfer line in Maryland, a U.S. official tells CNN's Jim Sciutto.