Why Mr. McCain would want to pander to right-wing activists  who helped George W. Bush kill off his candidacy in the 2000 primaries in a particularly ugly way  is baffling. Frankly, they have no place to go. Mr. McCain would have a lot more success demonstrating his independence, and his courage, if he stood up to them the way he did in 2000.

As far as we can tell, Mr. McCain and his aides did almost no due diligence before choosing Ms. Palin, raising serious questions about his management skills. The fact that Ms. Palin’s 17-year-old daughter is pregnant is irrelevant to her candidacy. There are, however, very serious questions about her political past and her ideology, including her links to a party advocating Alaska’s secession from the nation.

If Mr. McCain wanted to break with his party’s past and choose the Republicans’ first female presidential candidate, there are a number of politicians out there with far greater experience and stature than Ms. Palin, who has been in Alaska’s Statehouse for less than two years.

Before she was elected governor, she was mayor of a tiny Anchorage suburb, where her greatest accomplishment was raising the sales tax to build a hockey rink. According to Time magazine, she also sought to have books banned from the local library and threatened to fire the librarian.

For Mr. McCain to go on claiming that Mr. Obama has too little experience to be president after almost four years in the United States Senate is laughable now that he has announced that someone with no national or foreign policy experience is qualified to replace him, if necessary.