President Obama's approval rating is at 51 percent and could wind up as one of the fastest declines in presidential approval since World War II, according to a poll conducted by Gallup Aug. 23-25.

Only presidents Gerald R. Ford and Bill Clinton took faster falls in approval after taking office. Ford dipped below majority approval after three months in office, and Clinton reached that point after four months in the White House, Gallup said.

President Eisenhower had the longest run of popularity in office, with 63 months above the 50-percent mark. At its lowest point, his popularity reached 48 percent in March and April 1958 and rebounded back to majority approval, Gallup said.

We take a bow, as always, to Nate Silver's analysis of polls on his FiveThiryEight.Com site where, digesting two polls about South Carolinians who wanted Gov. Mark Sanford to resign after his admission of an extramarital affair, contrasted them to polls on other "pantsless pols" who had admitted similar indiscretions.

His conclusion: Sanford faces more pressure to resign than many of the others, except for former New York Gov. Eliot Spitzer. But those who want Sanford to step down outnumbered those who wanted to wave good-bye to former Idaho Sen. Larry Craig, former New Jersey Gov. James McGreevey, former President Bill Clinton, Nevada Sen. John Ensign and Louisiana Sen. David Vitter.

Here's the nifty chart that Nate constructed based on polling of other prominent politicians who have strayed from the path:

Fifty-seven percent of Americans favor Barack Obama making Hillary Clinton his Secretary of State, according to a Gallup poll conducted Nov. 18. Thirty percent don't like the idea.

Democrats support her selection by 79 percent to 12 percent, independents by 57 percent to 27 percent while Republicans oppose it 61 percent to 28 percent.