UNION PLATFORM.-1864.

THE National Convention which assembled at Baltimore on the 7th of June, 1864, and there nominated ABRAHAM LINCOLN for re-election as President, with ANDREW JOHNSON as Vice-President, adopted and presented to the American people the following:

Resolved, That it is the highest duty of every American citizen to maintain against all their enemies the integrity of the Union, and the paramount authority of the Constitution and laws of the United States; and that, laying aside all differences of political opinion, we pledge ourselves as Union men, animated by a common sentiment, and aiming at a common object, to do everything in our power to aid the Government in quelling by force of arms the rebellion now raging against its authority, and in bringing to the punishment due to their crimes the rebels and traitors arrayed against it.

Resolved, That we approve the determination of the Government of the United States not to compromise with rebels, nor to offer any terms of peace except such as may be based upon an "unconditional surrender" of their hostility and a return to their just allegiance to the Constitution and laws of the United States, and that we call upon the Government to maintain this position and to prosecute the war with the utmost possible vigor to the complete suppression of the Rebellion, in full reliance upon the self-sacrifice, the patriotism, the heroic valor, and the undying devotion of the American people to their country and its free institutions.

Resolved, That, as Slavery was the cause, and now constitutes the strength of this rebellion, and as it must be always and everywhere hostile to the principles of republican government, justice and the national safety demand its utter and complete extirpation from the soil of the republic; and that we uphold and maintain the acts and proclamations by which the Government, in its own defense, has aimed a death-blow at this gigantic evil. We are in favor, furthermore, of such an amendment to the Constitution, to be made by the people in conformity with its provisions, as shall terminate and forever prohibit the existence of Slavery within the limits of the jurisdiction of the United States.

Resolved, That the thanks of the American People are due the soldiers and sailors of the Army and Navy, who have periled their lives in defense of their country, and in vindication of the honor of the flag; that the nation owes to them some permanent recognition of their patriotism and valor, and ample and permanent provision for those of their survivors who have received disabling and honorable wounds in the service of the country; and that the memories of those who have fallen in its defense shall be held in grateful and everlasting remembrance.

Resolved, That we approve and applaud the practical wisdom, the unselfish patriotism, and unswerving fidelity to the Constitution and the principles of American liberty, with which Abraham Lincoln has discharged, under circumstances of unparalleled difficulty, the great duties and responsibilities of the Presidential office; that we approve and indorse, as demanded by the emergency and essential to the preservation of the nation, and as within the Constitution, the measures and acts which he has adopted to defend the nation against its open and secret foes; that we approve especially the Proclamation of Emancipation, and the employment as Union soldiers of men heretofore held in Slavery; and that we have full confidence in his determination to carry these and all other constitutional measures essential to the salvation of the country into full and complete effect.

Resolved, That we deem it essential to the general welfare that harmony should prevail in the National councils, and we regard as worthy of public confidence and official trust those only who cordially indorse the principles proclaimed in these resolutions, and which should characterize the administration of the Government.

Resolved, That the Government owes to all men employed in its armies,' without regard to distinction of color, the full protection of the laws of war; and that any violation of these laws or of the usages of civilized nations in the time of war by the Rebels now in arms, should be made the subject of full and prompt redress.

Resolved, That the foreign immigration, which in the past has added so much to the wealth and development of resources and increase of power to this nation, the asylum of the oppressed of all nations, should be fostered and encouraged by a liberal and just policy.

Resolved, That we are in favor of the speedy construction of a Railroad to the Pacific.

Resolved, That the National faith, pledged for the redemption of the Public Debt, must be kept inviolate; and that for this purpose we recommend economy and rigid responsibility in the public expenditures, and a vigorous and just system of taxation; that it is the duty of every loyal State to sustain the credit and promote the use of the National Currency.

Resolved, That we approve the position taken by the Government that the people of the United States never regarded with indifference the attempt of any European power to overthrow by force, or to supplant by fraud, the institutions of any republican government on the western continent, and that they view with extreme jealousy, as menacing to the peace and independence of this our country, the efforts of any such power to obtain new footholds for monarchical governments, sustained by a foreign military force, in near proximity to the United States.

DEMOCRATIC PLATFORM.-1864.

The Democratic National Convention which gathered at Chicago on the 29th of August, and presented the names of GEORGE B. MCCLELLAN for President, and GEORGE H. PENDLETON for Vice-President, agreed on and adopted the following:

Resolved, That in the future, as in the past, we will adhere with unswerving fidelity to the Union under the Constitution, as the only solid foundation of our strength, security, and happiness as a people, and as a framework of government equally conducive to the welfare and prosperity of all the States, both Northern and Southern.

Resolved, That this Convention does explicitly declare, as the sense of the American People, that, after four years of failure to restore the Union by the experiment of war, during which, under the pretense of a military necessity of a war power higher than the Constitution, the Constitution itself has been disregarded in every part, and public liberty and private right alike trodden down, and the material prosperity of the country essentially impaired, justice, humanity, liberty, and the public welfare, demand that immediate efforts be made for a cessation of hostilities, with a view to an ultimate Convention of all the States, or other peaceable means to the end that at the earliest practicable moment peace may be restored on the basis of the Federal Union of the States.

Resolved, That the direct interference of the military authority of the United States in the recent elections held in Kentucky, Maryland, Missouri, and Delaware, was a shameful violation of the Constitution, and the repetition of such acts in the approaching election will be held as revolutionary, and resisted with all the means and power under our control.

Resolved, That the aim and object of the Democratic party is to preserve the Federal Union and the rights of the States unimpaired; and they hereby declare that they consider the Administrative usurpation of extraordinary and dangerous powers not granted by the Constitution, the subversion of the civil by military law in States not in insurrection, the arbitrary military arrest, imprisonment, trial, and sentence of American citizens in States where civil law exists in full force, the suppression of freedom of speech and of the press,