Democrats ended their convention more than $8 million in debt on a loan secured by Duke Energy, while Republicans reaped massive donations from corporations and a stable of major conservative donors, new federal filings show.

The Charlotte 2012 host committee, organized by city officials, will get stuck with the responsibility for paying the debt. The Democratic Party and the Obama campaign will not tap any of the nearly $1 billion they’ve raised for the 2012 election to help, a spokeswoman for the Democratic National Committee said.

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