Whatever the truth, one thing is certain. Ms. Palin, who laughingly told the prankster that she could be president “maybe in eight years,” was the catalyst for a civil war between her campaign and Mr. McCain’s that raged from mid-September up until moments before Mr. McCain’s concession speech on Tuesday night. By then, Ms. Palin was in only infrequent contact with Mr. McCain, top advisers said.

“I think it was a difficult relationship,” said one top McCain campaign official, who, like almost all others interviewed, asked to remain anonymous. “McCain talked to her occasionally.”…

As late as Tuesday night, a McCain adviser said, Ms. Palin was pushing to deliver her own speech just before Mr. McCain’s concession speech, even though vice-presidential nominees do not traditionally speak on election night. But Ms. Palin met up with Mr. McCain with text in hand. She was told no by Mark Salter, one of Mr. McCain’s closest advisers, and Steve Schmidt, Mr. McCain’s top strategist…

As a result, two senior members of the McCain campaign said on Wednesday that Mr. Scheunemann had been fired from the campaign in its final days. But Rick Davis, the McCain campaign manager, and Mr. Salter, one of Mr. McCain’s closest advisers, said Wednesday that Mr. Scheunemann had in fact not been dismissed. Mr. Scheunemann, who picked up the phone in his office at McCain campaign headquarters on Wednesday afternoon, responded that “anybody who says I was fired is either lying or delusional or a whack job.”