Democratic front-runner Barack Obama raised $31.9 million last month, spent $36.4 million and started May with $46.5 million in the bank, according to his latest campaign finance report.
Obama vastly outraised John McCain, but the presumed Republican nominee is closing the money gap with the help of the GOP, finance reports showed. McCain had $21.7 million in the bank at the end of April.
Hillary Rodham Clinton piled up another $9.5 million in unpaid bills to vendors last month, pushing her total campaign debt to vendors and herself to nearly $31 million, according to her latest finance report.
Clinton raised $21 million from others in April but spent $28.9 million. She used personal loans to make up part of the difference and delayed payments to consultants. Including the unpaid bills from April, she owes $19.5 million. She has lent herself $11.4 million.