How many democratic presidents have there been and how many republican presidents have there been?
There were 5 Jacksonian Democratic presidents before the Civil
War.
There have been 9 modern Democrats since the Civil War. (The
Democratic Party split over slavery in 1860 . After the Civil War
ended a new Democratic Party emerged in opposition to the
Republicans. ) Some people add the 5 and 9 to get 14 Democratic
presidents.
There was one president, George Washington, before parties came
into being.
There was one Federalistm John Adams,
There are 4 Whig presidents.
There are 4 Democratic-Republican (Jeffersonian) presidents.
John Quincy Adams had ties with the residue of the old
Federalist party and later was a leader in the Whig party. He did
not really belong to a national party when hew was elected.
There were 18 Republican presidents , counting Andrew Johnson,
who ran as a Republican with Lincoln but had been a Democratic
Senator and joined to the reformed Democratic party after he was
President.
Summary: 18 Republican, 13 Democrat, 4 Whig, 4 Democratic
Republican, 2 unaffiliated, and one National Union Party (Andrew
Johnson).