I had predicted the KS-02 upset for some time, and I think it is the biggest upset in the House. The Lawrence, Kansas paper has a headline "Red State Looks Blue". The GOP AG, something of a "Santorum" figure, also lost.
The most delicious thing about the Boyda upset is not just that incumbent Ryun was a legendary athlete (holder of the world record for running the mile back in the '60s when a student at Kansas University) and a five term incumbent. It's that both Cheney and Bush came into the district to help Ryun in the final days. They came to Topeka (there would have been serious demonstrations in Lawrence, and there were some in Topeka) to help fire up and turn out the base.
It looks like they fired up and turned out the wrong base.
In Virginia, it seems clear that the "gender gap" was the most important factor. I think men can forgive candidates for stupid behavior and inarticulate or insensitive remarks, but women do not. As I write, it seems that Webb has a lead of about 7,000 votes and there are still some votes to be counted and maybe there will be legal challenges--though there could be some on both sides.
Allen might have been able to win this if he never campaigned, the old "Rose Garden" strategy. I mean, this is a former governor and incumbent senator. And son of a legendary, if somewhat eccentric football coach.
Missouri is not that big of an upset. It's often held up as a microcosm of the nation, but I think the contrast between places like Kansas City, St. Louis, and Columbia on the one hand, and the rest of the state, which mostly resembles "Dogpatch", is not that different from Ohio.
Missouri has historically been a Democratic state.