Presidential hopefuls will be allowed to file for the February 7th presidential primary in Missouri starting next week. The Missouri Secretary of State’s office opens filing for the Presidential Preference Primary ballot on Tuesday, October 25th at 8:00 in the morning. The window closes at 5 o’clock on Tuesday, November 22nd. Filing will take place on the third floor of the James C. Kirkpatrick Information Center on Main Street Jefferson City. In the state of Missouri only candidates from established parties may participate in the primary. That includes the Democrat, Republican, Libertarian, and Constitution parties.