With nearly two dozen debates under their belts, some Republican presidential candidates are saying enough is enough.

CNN was forced to cancel a debate scheduled for Mar. 1, after it started to look like Newt Gingrich would be the only one in attendance. Texas Rep. Ron Paul and former Massachusetts Governor Mitt Romney said today that they would not take part in the Georgia debate. Rick Santorum’s campaign had also been hinting that he’d skip it, as well.

All four candidates, however, are scheduled to take part in a debate in Tucson, Arizona on February 22. That’s a week before the Arizona and Michigan primaries.