In July, 1911, Senator La Follette began his active campaign for nomination as an avowed Progressive Republican, and within a few months he had developed an unexpected strength, particularly in the Middle West, which indicated the depth of the popular dissatisfaction with Mr. Taft's administration. In October of that year a national conference of Progressive Republicans assembled at Chicago, on the call of Mr. La Follette's campaign manager, and indorsed the Senator in unmistakable language, declaring him to be "the logical Republican candidate for President of the United States," and urging the formation of organizations in all states to promote his nomination. In spite of these outward signs of prosperity, however, Mr. La Follette was by no means sure of his supporters, for several of the most prominent, including Mr. Gifford Pinchot and Mr. James R. Garfield, were not whole-hearted in their advocacy of his cause and were evidently unwilling to relinquish the hope that Mr. Roosevelt might become their leader after all. Indeed, Senator La Follette came to believe that many of his supporters, who afterward went over to Mr. Roosevelt, never intended to push his own candidacy to the end, but employed him as a sort of "stalking horse" to interest and measure progressive sentiment for the purpose of putting the ex-President into the field at the opportune moment, if the signs proved auspicious. This was regarded by Mr. La Follette not merely as treachery to himself, but also as treason to genuine progressive principles. In his opinion, Mr. Roosevelt's long administration of seven years had failed to produce many material results. He admitted that the ex-President had done something to promote conservation of natural resources, but called attention to the fact that the movement for conservation had been begun even as early as Harrison's administration.[86] He pointed out that Mr. Roosevelt had vigorously indorsed the Payne-Aldrich tariff in the New York state campaign of 1910; and that during his administration the formation and overcapitalization of gigantic combinations had gone forward with unprecedented speed, in spite of the denunciation of "bad trusts" in executive messages. Furthermore, the Senator directly charged Mr. Roosevelt with having used the power of the Federal patronage against him in his fight for progressive reforms in Wisconsin.