The rumours are true, according to Sarah Palin. The McCain-Palin campaign was not a happy family.

In Palin's Going Rogue, she confirms reports of tension between her aides and those of the 2008 Republican presidential candidate, Senator John McCain. The vice-presidential candidate confirms that she had wanted to speak on election night, but was denied the chance and says she was kept "bottled up" from reporters during the campaign.

Palin also writes harshly of CBS anchor Katie Couric, whom she describes as "badgering" and biased. Palin's series of interviews with Couric was widely regarded as disastrous, leaving the impression of an ill-informed candidate who was unsuited for the job.

The 413-page book, with 16 pages of colour photos, but no index, comes out on Tuesday. Going Rogue, with a first printing of 1.5 million copies, has been at or near the top of Amazon.com and other best-seller lists for weeks, ever since publisher HarperCollins announced that the book had been completed fast and the release date was being moved up from next spring.

The book follows Palin from childhood to her departure last summer as Alaska governor. It includes much of what her admirers and detractors expected: tributes to family and faith and patriotism, and attacks against the media and other perceived opponents.

She writes about the "jaded aura" of professional campaign aides and how McCain's entourage limited her access to the media, leading to allegations - unfounded, she says - that she was avoiding reporters.

And she says that most of her legal bills were generated defending what she called frivolous ethics complaints, but she reveals that about one-tenth of the US$500,000 was a bill she received to pay for the McCain campaign vetting her for the VP nod.

financial help

She said when she asked the McCain campaign if it would help her financially, she was told McCain's camp would have paid all the bills if he'd won; since he lost, the vetting legal bills were her responsibility.

Written with Lynn Vincent, Going Rogue is folksy in tone and homespun. For example, Palin says her efforts to award a licence for a massive natural gas transmission line through Alaska was turning a pipe dream into a pipeline. She writes in awe about how the McCain campaign had hired a New York stylist who had also worked on Couric.

Taken aback by all the fussing, she wondered who was paying for the fancy clothes - family members were told it was being taken care of or was "part of the convention".

Palin shares behind-the-scene moments when the nation learned her teen daughter, Bristol, was pregnant, how she rewrote the statement prepared on her behalf by the McCain campaign - only to watch in horror as a TV news anchor read the original McCain camp statement, which, in Palin's view, glamorised and endorsed her daughter's situation.

not permitted to speak

Palin laments that she wasn't allowed to bring up loads of family members to the stage while McCain gave his election-night concession speech, the vice-presidential candidate having found out minutes earlier that she wouldn't be permitted to give her own speech.

She writes that ABC newsman Charles Gibson, who had an early interview with her, seemed bored by "substantive issues" stemming from her time as governor and that, while speaking with her, he "peered sceptically" at her over his glasses like a disapproving principal.

She writes at length about Couric. She says that the idea to meet with Couric came from McCain campaign aide Nicolle Wallace, who told Palin that Couric - also a working mother - liked and admired her. It would be a favour to Couric, too, whom Palin notes had the lowest ratings of the network anchors. Wallace said Couric suffered from low self-esteem. And Palin replied that she almost began to "feel sorry" for Couric.

She alleges that Couric and CBS left out her more "substantive" remarks and settled for "gotcha" moments. She writes that Couric had a "partisan agenda" and a condescending manner. Couric was "badgering", biased and far easier on Couric's Democratic counterpart,Joe Biden.