The true statement about political parties is: The U.S. Constitution does not mention political parties.
The other statements are incorrect:
- The Democratic Party was not the dominant party between 1860 and 1932; during that time, the Republican Party was dominant, especially after the Civil War.
- George Washington did not create the first political party; he actually opposed the formation of political parties.
- It is not illegal for one party to be in control of both houses of Congress; this can happen and has occurred in various periods of U.S. history.