McCain not letting up

His rival is on the sidelines to be at the side of his seriously ill grandmother, but time is fast running out for a comeback.

So Republican John McCain isn't pulling back on his schedule today, with three events in the swing state of Colorado.

McCain is emphasizing differences with Democrat Barack Obama on taxes, saying that while his opponent might want to "soak the rich," it's the middle class that will "go through the wringer."

"He believes in redistributing the wealth," he told a campaign rally in Denver. McCain argued that Obama and Democrats might talk of targeted tax cuts and increases, but such proposals usually hit lots of Americans.

"The US Congress has been known to fire rather wildly," he said.

Antiwar protestors interrupted McCain again. He replied, "We'll bring them home, but we'll bring 'em home in honor and victory."

"I've also got some more news for you: We're winning," he added.

Obama, meanwhile, let on today that his grandmother, Madelyn Dunham, 85, who helped raise Obama, might be in her last days.

"Without going through the details too much, she's gravely ill. We weren't sure and I'm still not sure whether she makes it to Election Day," Obama said on ABC's "Good Morning America."

"We're all praying and we hope she does, but one of the things I want to make sure of is I had a chance to sit down with her and to talk to her. She's still alert and she's still got all her faculties. And I want to make sure that I don't miss that opportunity."