Some have demanded that John McCain attack Barack Obama on William Ayers. Some have advised to attack on the subprime lending fiasco. “Ambition” gives both in a single 30-second spot, and it actually works better than one might think:

Obama’s blind ambition. When convenient, he worked with terrorist Bill Ayers. When discovered, he lied.

Obama. Blind ambition. Bad judgment.

Congressional liberals fought for risky sub-prime loans. Congressional liberals fought against more regulation. Then, the housing market collapsed costing you billions.

In crisis, we need leadership, not bad judgment.

Normally, I’d advise against trying to combine two messages in one 30-second spot, as it usually dilutes both. In this case, though, it works as a challenge to Obama’s leadership. If they had explicitly noted that Obama failed to act in the Senate when he had an opportunity to join McCain in proposing tougher regulations on Fannie Mae and Freddie Mac, that point would have been made stronger, but the spot still works.

It shows that McCain has no intention of backing away from either attack.  The McCain campaign will be using both themes for the next 25 days to argue that Obama is too great a risk in a time of war and economic turmoil.  If McCain wants to make that sale, though, he’s going to have to make both of these arguments in the next debate.