The party which, under the ironical designation of the National Union Party, now proposes to take the policy and character of Mr. Johnson under its charge, is composed chiefly of Democrats defeated at the polls, and Democrats defeated on the field of battle. The few apostate Republicans, who have joined its ranks while seeming to lead its organization, are of small account. Its great strength is in its Southern supporters, and, if it comes into power, it must obey a Rebel direction. By the treachery of the President, it will have the executive patronage on its side,--for Mr. Johnson's "conscience" is of that peculiar kind which finds satisfaction in arraying the interest of others against their convictions; and having thus the power to purchase support, it will not fail of those means of dividing the North which come from corrupting it. The party under which the war for the Union was conducted is to be denounced and proscribed as the party of disunion, and we are to be edified by addresses on the indissoluble unity of the nation by Secessionists, who have hardly yet had time to wash from their hands the stains of Union blood. The leading proposition on which this conspiracy against the country is to be conducted is the monstrous absurdity, that the Rebel States have an inherent, "continuous," unconditioned, constitutional _right_ to form a part of the Federal government, when they have once acknowledged the fact of the defeat of their inhabitants in an armed attempt to overthrow and subvert it,--a proposition which implies that victory paralyzes the powers of the victors, that ruin begins when success is assured, that the only effect of beating a Southern Rebel in the field is to exalt him into a maker of laws for his antagonist.