I have searched quite extensively for information on this, but couldn't find anything. Could you provide me with sources where these particular intentions of Hoover are mentioned?
And this: "When Thomas Dewey entered the Republican primaries in 1948, Hoover and two of his closest aides, Clyde Tolson and Louis Nichols, secretly agreed to put the resources of the FBI at Dewey's disposal. The director believed that when Dewey became president he would name Hoover as his attorney general."