Every 4 years, to garner the nomination for their party, GOPers swerve right, and Dems swerve left, to placate their respective bases, who tend more conservative/liberal than the population at large. Makes sense, since it is usually true believers most involved in the grassroots political process. This has repeated itself for many, many election cycles. Those that blur the lines between republican and democrat, are treated with suspicion by their bases. It could be a single issue, for example Joe Lieberman on the war, or a host of issues, such as Arnold in California. Their resultant election to office, driven...