The Mudflats has the scoop (but you can also read about it here and here):

Sarah Palin endorsed a Teabag Senatorial candidate named Joe Miller in Alaska. In a TV appearance, Miller was asked if he would endorse Sarah Palin for president in 2012. Miller waffled, saying there were "a number of great candidates out there."

Then, on September 19th, Todd Palin sent this e-mail to Joe Miller's campaign:


Joe and Tim,
>
>
> Hold off on any letter for Joe. Sarah put her ass on the line for Joe
> and yet he can’t answer a simple question ” is Sarah Palin Qualified
> to be President”. I DON’T KNOW IF SHE IS.
>
> Joe, please explain how this endorsement stuff works, is it to be
> completely one sided.
>
> Sarah spent all morning working on a Face book post for Joe, she won’t
> use it, not now.
>
> Put yourself in her shoe’s Joe for one day.
>
> Todd
> Sent via BlackBerry by AT&T

The Mudflats says that this e-mail, besides proving that Todd Palin is a borderline illiterate jackass, pretty much confirms that Sarah Palin is running for president in 2012.