Deborah Howell, the Washington Post's ombudsman ombudswoman ombudsperson writes:

Democrat Barack Obama has had about a 3 to 1 advantage over Republican John McCain in Post Page 1 stories since Obama became his party's presumptive nominee June 4. Obama has generated a lot of news by being the first African American nominee, and he is less well known than McCain -- and therefore there's more to report on. But the disparity is so wide that it doesn't look good.

(H/T: IP)