Yesterday, an incumbent Democrat Representative was almost certainly
ousted (McKinney), an incumbent Republican Representative in my home
state of Michigan was beaten in his primary and his opponent is almost
certain to win, and Democrat Senator Lieberman faces what promises to
be an intense battle after losing his primary.
There's an interesting way to interpret this which I haven't seen anyone mention yet. The theory of gerrymandering districts is that if you draw the district to be 60%+ solidly Republican, that the incumbent will basically be assured of re-election. Upon this quite a lot of the informal goverment system is based, including a lot of cynicism on the part of the electorate about the difficulty of actually affecting the government. However, the danger of gaming a system is that it tends to play you right back; you usually win a reprieve, but then whatever forces you were trying to deny come back redoubled.