For the first time in the history of the country, a political party organized on the express doctrine, and with the avowed purpose, of overthrowing the Government, in the event of their being unable to control it through the ballot-box. It is asserted here by gentlemen on the other side-by one portion of them-that if a Republican President shall be elected, they will resist his inauguration forcibly. That is one proposition made on the other side of the House, by the Democratic Party.