The hashtag is a play on "omnishambles, " from the BBC TV series "The Thick of It, " a satire of British government.
CNN: Romney trip begins in shambles
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There is no guarantee omnishambles, or any of the other shortlisted words, will make it on to the pages of the Oxford English Dictionary.
BBC: UK Politics
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Second, it reflects the first sign of Downing Street trying to get onto the offensive after spending most of the year on the back foot, from the omnishambles Budget onwards.