They married on July 8, 1891, opposed by her father, who thought Warren Harding was using her to climb the social ladder and had a wealthier suitor in mind for his daughter.
[13] After the wedding, which Florence's mother secretly attended, the couple embarked on a honeymoon tour of Chicago, St. Paul, Yellowstone, and the Great Lakes.
[16] When her husband entered the Battle Creek Sanitarium for depression in January 1894, Florence became the informal business manager of the Marion Star although she never had any official role, immediately demonstrating both the talent and the character to run a newspaper.
One of the newsboys, Norman Thomas, later the Socialist presidential candidate, declared that Warren was the front-man, but Florence was the real driving power of the Marion Star.
Though Warren was not particularly supportive of women's rights at the time, belittling rallies for temperance, he greatly appreciated his wife's help at the office and respected her frank opinions.
Journalist Mark Sullivan wrote of Florence, "As a wife, she had that particular kind of eagerness to make good which, in a personality that is at once superficial and unsure of itself, sometimes manifests itself in too strenuous activity, a too steady staying on the job.
Sawyer referred Florence to Dr. Jamez Fairchild Baldwin, who "wired" the kidney in place and did not remove it due to heart damage that she had already suffered.
Instead, she had her sights set on Washington, D.C., and Warren broadened his national reputation by very publicly supporting William Howard Taft at the Republican convention.
[29] She limited her role to advisory management and persuaded her husband to ignore pressures to have anti-Catholic remarks against the Democratic opponent, Timothy Hogan.
[34] In Washington D.C., Florence struck up a fast and lasting friendship with the mining heiress and socialite Evalyn Walsh McLean, frequently playing bridge and visiting movie theaters.
In order to better monitor the events on the front, Florence avidly read several newspapers and learned the pronunciation of foreign towns and locations.
During the summer of 1918, while greeting soldiers leaving from the Marion train station, Florence spotted Phillips complaining about the futility of sending men to fight.
Despite this public display of his wife's temper, Warren soon after sent Carrie love letters proclaiming his devotion, albeit with the caveat that a divorce from Florence was not feasible.
During the summer, her husband began to be mentioned as a potential presidential candidate, which Florence was initially not happy with since she thought he didn't have enough of a national reputation.
Florence gave him tentative support, apparently influenced by a Washington clairvoyant 'Madame Marcia' Champrey, who correctly forecast that Warren would become president, but added that he would die in office.
However, Florence's newspaper experience gave her an advantage over other candidates' wives; as Henry DeWolfe was dead, she was able to deflect press inquiries about her first marriage by implying that she had been widowed.
At times, she appeared to dominate the President;[50] Florence even had a strong influence on her husband's selection of cabinet members, in particular favoring Charles R. Forbes as director of the Veterans Bureau and Andrew Mellon as treasury secretary.
Florence relished in her role as White House tour guide, learning about the history of the property from books and displaying a portrait of Sarah Yorke Jackson.
[58] Florence became the first first lady since Frances Cleveland whose face was so recognizable to the public, as she frequently appeared in newsreel footage alongside Warren unveiling statues, attending baseball games, and dedicating the Lincoln Memorial.
Several other women also received money from the President, and Florence employed Gaston Means to spy on Nan Britton to steal her love letters.
[66] Since World War I had left many men disfigured and ill, Florence went out of her way to care for the patients at Walter Reed Hospital, seeking to improve ward life.
She sparked a small furor by inviting the National Council of Catholic Women to the White House, as liberals disdained their anti-birth control efforts.
Although Florence did not believe herself to be a gifted public speaker, she regularly gave impromptu speeches or "little patriotic addresses" to organizations such as the Red Cross and League of Women Voters.
[73] Both Warren and Florence Harding were relatively progressive on the subject of race, although the President largely toned down his rhetoric when giving speeches in the South.
Florence was responsible for making sure he did not undertake much work during his illness, once sending away an aide who handed the President some papers to review, and brought Warren to bed.
[80] After a group of Congressman undertook an investigation of the Veteran's Bureau and Charles Forbes was shown to display criminal behavior rather than simply being a shoddy administrator, Florence was furious.
[81] In early March, shortly before a planned trip to Florida, Florence was informed that Albert Fall was leaving the Interior Department as a Standard Oil agent, and she hastily organized a dinner in his honor.
[83] Despite having recently turned to Harry Daugherty for advice on the management of some of her assets, Florence began to distance herself from him due to the suspicion that he played a part in Smith's death.
During a convention of Shriners in June, Florence played a prominent role, conducting the band in a parade and selling pictures of Laddie Boy for animal rights organizations.
On this tour, Warren had been under the care of Charles Sawyer, who is believed to have misdiagnosed the President's condition, and administered stimulants that brought on his fatal heart attack[dubious – discuss].