As soon as the Constitution was finished the nation split into two camps, the Federalists who wanted to accept the Constitution and the Anti-Federalists who did not. Generally speaking, the Federalists were the wealthy and educated. Their interests were better served by a strong government and now they needed more to hold the nation together. The Anti-Federalists were mainly comprised of the common people (Jefferson excluded). They feared the strong government would become too strong and feared no Bill of Rights. In the end the elites won out but did promise to write a Bill of Rights as soon as the Congress was established.
Historically Speaking 