The Times plunges into the speculation on a GOP VP shake-up: Asked in a C-Span interview if he could envision any circumstances under which he would step aside, Mr. Cheney replied: "Well, no, I can't. If I thought that were appropriate, I certainly would."...Mr. Cheney, who has suffered four heart attacks, has faced persistent questions about his powerful role in promoting the war in Iraq and insisting that Saddam Hussein had unconventional weapons. But like Mr. Quayle, Mr. Cheney suffers from low approval ratings. Last month, a New York Times/CBS News poll found that 21 percent of voters had a favorable impression of Mr. Cheney, compared with 39 percent for Mr. Bush. ...even some Republicans are now questioning whether Mr. Cheney should stay on the ticket. As one House Republican said, conspiratorially, outside the House chamber this week, "Watch Cheney." Another Republican member of Congress said that Mr. Cheney was increasingly viewed as a political liability. "I don't think you fix the problem by changing the No. 2 horse, but Bush is facing so much heavy baggage going into November, he's going to have to throw some of that baggage off," said the Republican, who insisted on anonymity because of the sensitivity of the issue. I still say it's not going to happen - and that, given Cheney's popularity as compared to that of, say, Condoleeza Rice, it's probably better for those of us on the left that it doesn't.