NEW : Sen. Barack Obama raised $ 20 million in February , campaign sources say . Clinton camp says her tax returns will be released soon . more than 442,000 donors contribute to Sen. Clinton 's , campaign says . With its March totals , the Obama campaign has raised approximately $ 234 million , which surpasses the Democratic record of $ 215 million that 2004 nominee Sen. John Kerry raised in that presidential primary season . Number is below record $ 55 million the Federal Election Commission raised in February .
NEW : Sen. Barack Obama raised $ 20 million in February , campaign sources say . Clinton camp says her tax returns will be released soon . more than 442,000 donors contribute to Sen. Clinton 's , campaign says . Number is below record $ 55 million the Federal Election Commission raised in February .