The rural, moderate Democrat with less money won, in a pretty stunning shift:

Running with the least money and fewest ties to vote-rich Northern Virginia, State Sen. R. Creigh Deeds has won the three-way Democratic primary for governor, paving the way for a rematch with Republican Bob McDonnell in the fall. Deeds, 51, a country lawyer from Bath County in the western part of the state, was viewed as an unlikely winner against two Northern Virginians with entrenched political ties. Known for his moderate views on such issues as gun rights, but also appreciated for his folksy style and attention to the Washington suburbs' cry for road improvements, Deeds was leading in Fairfax, Arlington, Loudoun and Prince William counties. Deeds had almost doubled the vote totals of each of his opponents, Democratic activist Terry McAuliffe and former Del. Brian Moran.

The Republican Governors Association is already out of the gates, branding Deeds as a tax hiker:

It's no surprise that Democrat Terry McAuliffe said "Bob already beat Creigh once and he beat him on the gas tax." Brian Moran's campaign also blasted Deeds in an ad saying, "raising the gas tax in the middle of a recession only hurts working people." As a state legislator, Creigh Deeds has repeatedly voted to hike taxes.

It's worth noting that even the head of the Democratic Governor's Association was not pro-Deeds, instead abandoning its usual neutral position to endorse McAuliffe:

Montana Gov. Brian Schweitzer, the chairman of the Democratic Governors Association, plans to endorse former Democratic National Chairman Terry McAuliffe in the Virginia gubernatorial primary. According to sources with knowledge of the announcement, Schweitzer will appear with McAuliffe in Arlington, Va., on Friday morning to announce his support ahead of Tuesday's election. Given Schweitzer's position with the DGA, the move comes as a surprise to close observers of the race as the association's chairman rarely endorses in a Democratic primary, let alone just four days before the election.

Jim Geraghty takes a look at what the primary numbers in Northern Virginia mean for McDonnell, and McDonnell welcomes his opponent to the race:

McAuliffe concedes,
here. The last time Deeds and McDonnell met, in the 2005 fight for Virginia attorney general the vote went to a recount,
and McDonnell ultimately won by 360 votes. It's gonna be a busy year for these two.