The Tennessee state Republican party just learned it. Watch the delicious video.
Here's the short and dirty. The wingnut side of the TN Repubs had planned, after gaining control of the TN House for the first time in 40 years, to go the full wingnut. They had a new Speaker picked out and everything. But they forgot one simple rule of politics: don't shit where you eat.
See, they had this moderate member they were always screwing with, to the point where some of his own colleagues had threatened boycotts of his businesses. They did this even though they needed him--their majority was only 50-49--and he made them pay, as you saw in the video.
The video is via John Cole, but I have to admit, I'm putting it here so I can just watch it over and over.