There are a bunch of memes that float around on cable news, like "voters are angry!" And those angry voters, so the story line goes, are voting out incumbants in droves. Funny thing is, it isn't happening. At least not in the primaries. It doesn't matter how many incumants win their in-party votes (and right now it stands at over 300 to seven), the story won't die. Rachel Maddow put together this "pre-buttal" to tomorrow's primary votes, in the expectation that they'll trot that old line out again.