A great political revolution has set in, and. the Radicals are completely dumb-foundered, and know not what to make of ib. The key-note of this revolu tion was sounded some month* ago in Connecticut, and reaching California the people of that State took it up, and gained a complete Democratic triumph. The example set by Connecticut and California has been followed by the hithsrto Radical States of Penn sylvania and Ohio, which have been victoriously carried by the Demoorats in the State elections just held thete. In Ohio the Democrats will hare a, majority of about ten in the State Legislature, thus enabling them to elecb a United States Senator in place of old Ben Wade, the fierce and bitter and impetuous Radical leader. The people of Ohio have alio decfded by an overwhelming majority that they are entirely opposed to negro suffrage. There is little doubt that the qwestion of impeaching the President will now fall dead, as the Radicals, in the light of recent events, will net dare any longer to advocate it. Next month the election in this State come off, and there is every indication that it will follow in the footstepß of Con necticut, California, Pennsylvania, and Ohio, and add its voice of rebuke to the Radical majority in Congress who are keeping the States dissevered enacting unconstitutional laws, causing dissension and distrust every nhere to exist, and mining the country financially, politically, and commercially. It is said that General Grant has signified his intention of retiring from the War Department, and that the President has proposed to General Sherman that he accept of it, but that he declines to do so. There are also xumours that further changes are to be made in the Cabinet at an early day ; that Secretaries Seward and McCulloch and Postmaster- General Randall will resign, and that their places will be filled by prominent Democrats from the States of Ohio, New York, and Pennsylvania. A proposition has been started in Washington, that a Congressional committee shall be appointed by the content of all Senators and Representatives who concur in the proposition, to wait upon President Johnson and request him to state definitely what plan he hts to submit for the speedy reconstruction and admission of che Southern States, as he has hitherto opposed every policy that has been initiated by Congress. 