Going negative against Democrat Barack Obama isn't just a campaign strategy for Republican John McCain. It's also a good formula for selling books.

Three anti-Obama releases were in the top 20 of Amazon.com's best-seller list Tuesday, despite little critical attention or mainstream media coverage.

"There's a pent-up demand from people on the right side of the aisle who feel that the mainstream media is effusively covering Barack Obama and not critically covering him," says Marji Ross, president and publisher of the conservative Regnery Publishing, Inc, which just released David Fredosso's The Case Against Barack Obama.

Until recently, the most widely read narrative of Obama's life was written by Obama, in the million-selling Dreams From My Father and The Audacity of Hope. The new releases, like McCain's campaign ads, attempt a counter-narrative.

The subtitles are the giveaway: Jerome Corsi's The Obama Nation: Leftist Politics and the Cult of Personality, Fredosso's The Case Against Barack Obama: The Unlikely Rise and Unexamined Agenda of the Media's Favorite Candidate and Dick Morris' Fleeced: How Barack Obama, Media Mockery of Terrorist Threats, Liberals Who Want to Kill Talk Radio, the Do-Nothing Congress, Companies That Help Iran, and Washington Lobbyists for Foreign Governments Are Scamming Us ... and What to Do About It."

The authors allege that Obama is not a benign spokesman for hope and unity, but an ideologue with close ties to 1960s radicals and the Chicago political machine. Corsi is already known as a co-author of Unfit for Command, the influential attack against the war record of Senator John Kerry, the Democrats' presidential candidate in 2004. 

Fredosso is a reporter for National Review Online, while Morris is a former aide to President Bill Clinton who has since made a career of bashing Democrats.