The best way to understand the pledge is as a bid to co-opt the Tea Party by a Republican leadership that wants to sound insurrectionist but is the same old Washington elite. These are the folks who slashed taxes on the rich, turned a surplus into a crushing deficit, and helped unleash the financial crisis that has thrown millions of Americans out of their jobs and their homes.

Not only are the players the same, the policies are the same. Just more tax cuts for the rich and more deficit spending. We find it hard to believe that even the most disaffected voters will be taken in. But again, these are strange and worrying times.

Still, the pledge was worth a careful reading. It is a reminder that there is a choice to be made this fall.