This seems pretty significant.
Virginia Gov. Timothy M. Kaine (D) plans to endorse Sen. Barack Obama for president Saturday, pledging early support from a Southern Democrat as the Illinois senator begins his campaign for the White House.
Kaine will sign onto Obama's presidential team ahead of the senator's appearance at the Virginia Democratic Party's annual fundraiser Saturday night, according to sources familiar with Kaine's decision. The sources spoke on condition of anonymity because they do not want to preempt the formal announcement.
Considering Governor Kaine's win in 2005 and Jim Webb's in 2006, Virginia is clearly one of the red states most primed for a Democratic pickup thanks mostly to Northern Virginia and it's proximity to the DC Metro Area.