From Think Progress:

Max Blumental reports on The Daily Beast that Sarah Palin may have quit her job today because she was trying to avert a major, yet-to-be-disclosed corruption scandal. The gist of the rumor is that an Alaska building company called Spenard Building Supplies (SBS) was awarded a contract by Palin to build a hockey arena in Wasilla, AK, and in return, SBS helped construct Palin's home:

Many political observers in Alaska are fixated on rumors that federal investigators have been seizing paperwork from SBS in recent months, searching for evidence that Palin and her husband Todd steered lucrative contracts to the well-connected company in exchange for gifts like the construction of their home on pristine Lake Lucille in 2002. The home was built just two months before Palin began campaigning for governor, a job which would have provided her enhanced power to grant building contracts in the wide open state.

SBS has close ties to the Palins. The company has not only sponsored Todd Palin's snowmobile team, according to the Village Voice's Wayne Barrett, it hired Sarah Palin to do a statewide television commercial in 2004.

Though Todd Palin told Fox News he built his Lake Lucille home with the help of a few "buddies," according to Barrett's report, public records revealed that SBS supplied the materials for the house. While serving as mayor of Wasilla, Sarah Palin blocked an initiative that would have required the public filing of building permits--thus momentarily preventing the revelation of such suspicious information.

Just months before Palin left city hall to campaign for governor, she awarded a contract to SBS to help build the $13 million Wasilla Sports Complex. The most expensive building project in Wasilla history, the complex cost the city an addition $1.3 million in legal fees and threw it into severe long-term debt. For SBS, however, the bloated and bungled project was a cash cow.

Alaska bloggers have reported in recent weeks that "a long simmering embezzelment/IRS scandal is still being looked at by the feds." In her press conference today, Palin asked the public to "trust me with this decision and know that it is no more politics as usual." But she also bemoaned "political operatives" who have "descended on Alaska" to investigate "all sorts of frivolous ethics violations." Palin said this "politics of personal destruction" was one of the key motivating factors behind her decision today.

Carl Bernstein says Hillary is going to fight her way onto the ticket.

Clinton "is trying to figure out how to land the plane without looking like surrender," a prominent figure in the Obama camp said Friday. This means bringing her campaign to a close in the next few weeks and trying to leverage her way onto an Obama ticket from a position of maximum strength.

A person close to her and to her campaign staff said this week, "I think the following will happen: Obama will be in a position where the party declares him the nominee by the first week in June. She'll still be fighting with everybody -- the Rules Committee, the party leaders -- and arguing, 'I'm winning these key states; I've got almost half the delegates. I have a whole constituency he hasn't reached. I've got real differences on approach to how we win this election, and I'm going to press the hell out of this guy. ... Relief for the middle class, universal health care, etc.; I'm Ms. Blue Collar, and I'm going to press my fight, because he can't win without my being on the ticket.' "

Another major Democratic Party figure agreed: "Obama has got a terrible situation. He marches to a different drummer. He won't want to take her on the ticket. But he might have to, even though the idea of Vice President Hillary with Bill in the background at the White House is not something -- especially after what [the Clintons] have thrown at him that he relishes. I believe she'll go for it."