A pendulum metaphor used to describe the political modulation from liberal to conservative needs to be replaced with a tank track metaphor. If each track pad represents the political philosophy of each incumbent. No mater how conservative it is it still travels left while the tank is moving to the left. At best the conservative tract pad stands still while the reminder of the tank moves left. Then as soon as a liberal government is elected the speed left is even faster.
A tank moving to the left represents our county politics even when we elect a conservative government.