The Two Conventions at Louisville.To-morrow both sections of the Union party hold conventions in Louisville. We have no idea what the action of either or both of these conventions will be. but we hope and trust that they will do something to restore the confidence of the people, and stay the tide of fanaticism which at present seems to be sweeping over the South. We trii9t that politics, as the word has been understood, will be entirely ignored. To meet at Louisville to deliberate about and wrangle over a mere abstraction, or to endeavor to resuscitate dead issues, would, at the present, crisis, be ridiculous in the extreme. The all abeorbing topic of the present is Union or Disunion. That is the issue. It is at our very doors, and must be met at once.We believe that all, or nearly all, who compose the Bell and Douglas parties in Kentucky are for the Union, provided we can have with it a guarantee of our constitutional rights. At all events, we believe that the Bell-Douglas men of Kentucky are opposed to breaking up this Union, until we have some prospect of bettering ourselves after it is destroyed.In opposition to these conservative parties are the members of the late Breckinridge party, who are nearly unanimous for secession, and are only waiting for the signal of “Kentucky's favorite son,” to openly avow their sentiments. It will not be many weeks before you will hear the Breckinridge men openly advocating immediate secession. They will throw off the mask, and exulting-)y claim what they have so indignantly denied, viz: that the object of running Breckinridge was to secure the election of Lincoln, and thus expedite the advent of Southern Rights, which, with them, means secession.