When Wilson invited the Foreign Relations Committee to the White House to informally discuss the treaty, Harding ably questioned Wilson about Article X; the president evaded his inquiries. The Senate debated Versailles in September 1919, and Harding made a major speech against it. By then, Wilson had suffered a stroke while on a speaking tour. With an incapacitated president in the White House and less support in the country, the treaty was defeated. With most Progressives having rejoined the Republican Party, their former leader, Theodore Roosevelt, was deemed likely to make a third run for the White House in 1920, and was the overwhelming favorite for the Republican nomination. These plans ended when Roosevelt suddenly died on January 6, 1919. A number of candidates quickly emerged, including General Leonard Wood, Illinois Governor Frank Lowden, California Senator Hiram Johnson, and a host of relatively minor possibilities such as Herbert Hoover (renowned for his World War I relief work), Massachusetts Governor Calvin Coolidge, and General John J. Pershing. Harding, while he wanted to be president, was as much motivated in entering the race by his desire to keep control of Ohio Republican politics, enabling his re-election to the Senate in 1920. Among those coveting Harding's seat were former governor Willis (he had been defeated by James M. Cox in 1916) and Colonel William Cooper Procter (head of Procter & Gamble). On December 17, 1919, Harding made a low-key announcement of his presidential candidacy. Leading Republicans disliked Wood and Johnson, both of the progressive faction of the party, and Lowden, who had an independent streak, was deemed little better. Harding was far more acceptable to the "Old Guard" leaders of the party. Daugherty, who became Harding's campaign manager, was sure none of the other candidates could garner a majority. His strategy was to make Harding an acceptable choice to delegates once the leaders faltered. Daugherty established a Harding for president campaign office in Washington (run by his confidant, Jess Smith), and worked to manage a network of Harding friends and supporters, including Frank Scobey of Texas (clerk of the Ohio State Senate during Harding's years there). Harding worked to shore up his support through incessant letter-writing. Despite the candidate's work, according to Russell, "without Daugherty's Mephistophelean efforts, Harding would never have stumbled forward to the nomination." There were only 16 presidential primary states in 1920, of which the most crucial to Harding was Ohio.