Public Policy Polling (PPP) has a new survey showing Barack Obama may be in real trouble in Ohio, the perennial swing state that he won by just over 260,000 votes in 2008. According to PPP, Obama's approval rating in Ohio is at 43 percent, with only 39 percent of independents approving of his job.

In hypothetical match-ups with potential Republican nominees, Obama does the worst against Mitt Romney, with whom he is tied at 46 percent. Herman Cain is within reach, too, garnering 45 percent to Obama's 48 percent. Ron Paul trails Obama by eight points, while Rick Perry and Michele Bachmann both trail him by nine points. PPP surveyed 581 voters in Ohio with a 4.1 percent margin of error,. The full results of the poll are here.

It's worth noting that while Obama won Ohio in the 2008 general election, he lost the state's Democratic primary to Hillary Clinton that year. Michael Barone points out in the Almanac of American Politics that Obama ran behind 2004 nominee John Kerry in the traditionally Democratic counties of eastern Ohio in the Appalachia region. If the president's numbers continue to be as bad as they are in this state, he could be on track to lose Ohio's 18 electoral votes next November.

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