Former New York City Mayor Rudy Giuliani is speaking now. Alaska Gov. Sarah Palin is on deck.

Giuliani is speaking about what he calls Sen. Barack Obama's lack of experience and Sen. John McCain's experience.

"No one can look at John McCain and say he is not ready to be commander-in-chief. ... This man has been tested over and over and over again,'' he said.

Giuliani said: "This is no time for on-the-job training.''

Meanwhile, CNN is reporting that McCain is making his way to the XCel Center.

-- John Guerriero