The Republican National Committee is preparing to change its rules to require presidential candidates seeking the party’s nomination to sign a pledge to not participate in any debates sponsored by the Commission on Presidential Debates…

The Republican Party chairwoman, Ronna McDaniel, had demanded that changes be made to the commission and how the debates were held, writing in a letter to the commission in June that the party and its voters had lost faith in the commission.

The change requiring candidates to refuse participation in the commission’s debates is to be voted on at the R.N.C. winter meeting in Salt Lake City in February. If the R.N.C. moves forward with it, it is unclear what that would mean for future debates. But it would change the approach to be similar to what happened before the commission existed, when the two parties or campaigns had to negotiate directly and agree on terms, or no debates would take place.