[Lurking Libertarian]

Under the standard for being an “interested person” as pronounced by Newman v. United States ex rel. Frizzell, 238 U.S. 537 (1915), in a case involving a public office one would have to have “an interest in the office itself peculiar to himself…” and be filing an action against another who allegedly usurped that office."

Exactly. John McCain has standing; Sibley doesn't.

[plenipotentiary]

But he does have standing....

"Petitioner – a citizen of the United States and a Registered Write-In Candidate for President of the United States..."

http://www.montgomeryblairsibley.com/library/SCOTUSPetition.pdf