Obama: The Chicago Way.

I repeat, they don't know what's hitting them

By the day's end, the Democratic National Committee was threatening to escalate the fight further by highlighting McCain's connections to the "Keating Five" savings and loan scandal, in which the senator ended up before the Senate ethics committee.

"They go Rezko, we go Keating," said a Democratic strategist, speaking on the condition of anonymity to divulge potential campaign strategy. "If they want to escalate, bring it on."