The opponents of the Constitution were known as the Anti-Federalists. They were concerned that the new Constitution created a strong central government that could threaten individual liberties and the rights of states. They advocated for a bill of rights to be included to protect these freedoms.
In contrast, the Federalists supported the Constitution, arguing that a stronger national government was necessary for the stability and success of the new nation.
The Whigs and Democratic-Republicans were political parties that emerged later in the early 19th century and were not directly involved in the debates surrounding the ratification of the Constitution itself.