Hillary Clinton has loaned her presidential campaign $6.4 million over the past month, an aide said today.
The money more than doubles Mrs Clinton's personal investment in her bid for the Democratic nomination. She gave her campaign $5 million earlier this year.
Rival Barack Obama has routinely outspent her in primary after primary. Mrs Clinton's campaign reported raising $10 million online after her victory in Pennsylvania on April 22.
Mr Obama has shown little difficulty tapping his vast network of donors. He spent more than $7 million on advertising ahead of yesterday's primaries in North Carolina and Indiana to her nearly $4 million dollars.
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