Which of the following is not a political party that emerged during Washington's term as president?

Democrats!

Explanation:

During this time period, the only political parties during this time were the Democratic-Republicans and Republican. Democrats was not a term coined for the democratic-republicans just yet.

The only two political parties that emerged during Washington's tenure were the Democratic-Republicans and the Federalist. While you have not listed the parties, whichever one is not either of these is the correct answer.