Washington (AP) A campaign aide says Hillary Rodham Clinton has lent her presidential campaign 6.4 million dollars over the past month.

The money more than doubles Clinton's personal investment in her bid for the democratic nomination. She gave her campaign $5 million earlier this year.

Clinton has been struggling financially behind the record fundraising of Barack Obama.

Obama has routinely outspent her in primary after primary. Clinton's campaign reported raising 10 million dollars online after her victory April 22nd in Pennsylvania. But Obama has shown little difficulty tapping his vast network of donors. He spent more than 7
Million dollars on advertising ahead of Tuesday's primaries in North Carolina and Indiana to her nearly 4 million dollars.