After an initial surge of negative sentiment following their peak, and now that they have declined further, some analysts are once again turning positive.

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The findings reflect a remarkable fall in the fortunes of the Democrats from their surge in the 2006 midterms (33 percent negative versus 82 percent negative for the GOP).

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Ed Miliband was helped by events such as the surge in oil prices and Britain's slip back into negative growth late last year.

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