Kamala Harris was poised to win the 2024 presidential election when her message included America getting control of its border and her championing economic and political change.

In her campaign launch addressing the economy and in her DNC acceptance speeches, she made the cost of living singularly important, showed empathy, and offered concrete policy solutions. She promised that Congress would enact the bipartisan border control bill. She embraced President Biden’s expanded Child Tax Credit and attacked Donald Trump’s tax cuts for billionaires. Her speeches made the election a battle for the middle class. She was laser-focused on the cost of living, while portraying—correctly, as we are seeing today—Trump tariffs as an inflationary tax on imports. She made that the principal fight of the campaign.

And after her debate against Trump, Harris moved into a three-point lead nationally and, critically, ahead in Wisconsin, Michigan, and Pennsylvania.

But it was not to be.

Two books, one by Chris Whipple, Uncharted: How Trump Beat Biden, Harris, and the Odds in the Wildest Campaign in History, and the other by Jonathan Allen and Amie Parnes, Fight: Inside the Wildest Battle for the White House, show the disastrous decisions that put Donald Trump in the White House. I will also describe my efforts with various participants to impact those decisions.

You need to read both these important books to understand the 2024 election. Harris could have won, but her campaign had so many 180-degree turns and was so burdened by Joe Biden’s continued presence in the campaign that she lost. The lessons for Democrats are painful.

Allen and Parnes had strong access to the managers and campaign operations for both Biden and Harris, making the book indispensable to understanding the campaign’s many turns. Harris kept on Biden’s campaign manager Jennifer O’Malley Dillon. That fateful decision contributed mightily to the disaster.

But Whipple’s will be the more important book because it had better access to the advisers closest to Biden, understands the implications of changes in message and strategy for the election, and effectively uses other research to tell a fuller picture.

The further I read in these books, the angrier I grew with the Biden advisers who failed to act as his senescence accelerated, while Biden’s deep personal insecurity and paranoia produced a preposterous campaign based on his accomplishments, in what was really a change election. I was also maddened by the apparent sexism of the Biden team that assumed his vice president could not win the presidency, disastrously delaying his exit from the race.