The presidential race is off to a brisk start. The 2008 candidates have already raised more than $150 million in just three months, according to the Center for Responsive Politics. Some say that each party's winner will need to raise $500 million to compete in the general election. So far, Senator Hillary Clinton (D-New York) is leading the Democratic pack with $36 million raised and former Massachusetts governor Mitt Romney is leading the Republicans with $23.4 million.