As the Democratic candidate sets records for donations, his efforts have come under increased scrutiny. By Dan Morain and Doug Smith, Los Angeles Times Staff Writers Barack Obama's money machine is fueled by the likes of Martha Murphy, a grandmother who has donated 104 times for a total of $2,475.34. Murphy has used her credit card to donate in amounts as small as $10. "It is amazing how it adds up," she said. Obama has revolutionized campaign fundraising, employing the Internet to tap into more donors than any candidate in history. The campaign has reported $160 million in contributions from donors of $200 or...
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