That, and other news, in today’s Roundup and Recap.

For compelling television, not even the “Jon & Kate” saga can compete with this one: A missing governor, intrigue about his whereabouts, exotic word that he’s been in Argentina and never checked in to the U.S. Embassy, and finally a live press conference, after an agonizing stream of apologies, Gov. Mark Sanford of South Carolina admitted to an affair with a woman there. Choking back tears, he said, “I’ve let down a lot of people, that’s the bottom line.” He did change the equation on political admissions in not having his wife stand by his side, and even suggesting to the press at one point that he was delivering perhaps more than they wanted to hear. I doubt it.

Anyhow, Sanford has resigned as head of the Republican Governors Assn. and appears to have scuttled his chances of 2012 contention for the presidency.

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Newsweek’s Andrew Romano has a great, pre-admission piece on why Sanford stands out in the political sphere: Raw emotion. 

Politico’s Jonathan Martin rounded up all of the GOP contenders for 2012 now out of contention or struggling: Sanford (affair), John Ensign (affair), Sarah Palin (tabloid problems) and Jon Huntsman (sent off to China by Obama).

From his story: ““Republican candidates have got a big problem with ‘the spark thing,’” lamented Republican consultant Mark McKinnon, alluding to Sanford’s memorable characterization of the moment his friendship turned romantic. “They can’t seem to put out the ancient fire that has burned so many before.””

Jonas On the Hill: Nick Jonas created a sensation testifying before the Senate Homeland Security and Governmental Affairs Committee about federal funding for diabetes research. He met with President Obama on Tuesday.

Photo: WireImage.

USC Event: I should have more video soon, but on Tuesday I appeared on a panel at USC’s Jesse Unruh Institute called “All the King’s Horses…How to Fix a Broken California.” Dan Schnur moderated, with a central question being. how do you sell a reform proposal, like a state constitutional convention, to a public either cynical or apathetic to the system? Streaming video here.

Bell’s Call: Kristen Bell also was in D.C. to push members of Congress to take action on ending the 23-year war in Uganda, reports the Examiner’s Yeas & Nays. She says of celebrity activism, “Sometimes I feel very frivolous about my career in general, and I don’t often feel like I have a purpose.”