Not until President McKay specifically instructed him to do so in February 1968 did Ezra Taft Benson report to the Twelve about the behind-the-scenes efforts on behalf of his presidential candidacy. This was more than two years after he began exploring this possibility with McKay and with the national leaders of the Birch Society who headed "The 1976 Committee."
... He attended their weekly meetings without once mentioning the efforts being made to propel him out of quorum activity and into the White House. What the apostles learned about Benson's candidacy, they read in the newspapers. When he finally informed a quorum meeting of those efforts in February 1968, Benson made it clear he did so only upon McKay's insistence. That was the day after the church president had privately ended Benson's political hopes by confidentially reaffirming to George Wallace that the apostle was unavailable as his vice-presidential candidate.
[Source: Dew, Ezra Taft Benson, 397-98; The 1976 Committee, Vie Team You Can Trust To Guide America; Epstein and Forster, The Radical Right, 53-55, 142. From D. Michael Quinn, Ezra Taft Benson and Mormon Political Conflicts, Dialogue: A Journal of Mormon Thought 26:2 (Summer 1992), also in Quinn, The Mormon Hierarchy: Extensions of Power Salt Lake City (Signature Books, 1994), Chapter 3.]