National Union America

The National Union Party (May 21, 1964-68) is seen as a temporary name for the Republican Party by many historians when it can infact (having been in power till the impeachment of Andrew Johnson) be seen in a different way; as it's own party. During the 1961 election many voters where dissatisfied with the Republican Party and new parties where gaining ground; the Unionist Party and aged Democratic Party yet due to the severity of the war even they where lacking in the public's trust. Thus in 1961 members of the Democratic and the Republican parties came together in the name of National Union to create a new party in hopes of preventing the nation from further tearing itself appart. While Lincoln was not present at the new party's convention he (a Republican) was chosen by the convention to run alongside Democrat Andrew Johnson in the election and accepted; winning the 1864 election.

In OTL he was assassinated as Booth uttered the worlds "Sic Semper Tyranis" and Andrew Johnson became President; Andrew was impeached shortly after having held what has been considered one of the worse presidencies in the history of the United States (refused to recognize the Cuban Republic's independence from Spain, refused to protect freed slaves, and allowed the states to innact Black Codes).

In this timeline not only does Lincoln not get assassinated but the National Union Party endures forever changing the face of American politics for the party's sixth of eleven resolutions read; "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 endorse the principles proclaimed in these resolutions, and which should characterize the administration of the Government. " 

Under such a platform the National Union Party would have established a single party state in the Americas. This timeline explores this and the effects such will have on the world as the party evolves, grows, and develops through the decades.