[R]ecent days have given John McCain’s team little reason to suppose that not-that-bad is good enough. The Republican ticket’s sliding polls and narrowing electoral map gave it a different imperative in her showdown against Joe Biden. That was to alter the trajectory of the race in a way reminiscent of how Palin first enlivened Republicans—it seems long ago now—when she joined the ticket in late August.

Absent new polling, there is little reason to think she cleared that bar in St. Louis.

To the contrary, it is hard to count any objective measures by which Biden did not clearly win the encounter. She looked like she was trying to get people to take her seriously. He looked like he was running for vice president. His answers were more responsive to the questions, far more detailed and less rhetorical.

On at least ten occasions, Palin gave answers that were nonspecific, completely generic, pivoted away from the question at hand, or simply ignored it: on global warming, an Iraq exit strategy, Iran and Pakistan, Iranian diplomacy, Israel-Palestine (and a follow-up), the nuclear trigger, interventionism, Cheney’s vice presidency and her own greatest weakness.