[Need personal advice of a political nature? Or political advice of a personal nature? Send your question to Stumped. Questions may be edited.] Dear Stumped, Endorsements come in all styles and sizes, from Kennedys to Chuck Norris. I realize they usually don't make a difference, but do you think that one stands out this election cycle as particularly noteworthy or influential? Ted Kravis Dear Ted, I understand that Hillary Clinton has Osama bin Laden vouching for her (or something like that) in new ads in Pennsylvania, but I am still going to have to go with Dan Rooney's endorsement of Barack Obama. All of us black-and-gold fanaticos know that the Rooney family, owners of the Pittsburgh Steelers, is infallible when speaking about all things unrelated to the skills of one Kordell Stewart (if you don't know what I am talking about, consider yourself lucky). Hasn't the family endorsed every winning ...