A Nixon-Humphrey-Wallace presidential election where the Wallace is Henry A.? Not impossible:
Let's say there's no Korean War. In OTL, Wallace broke with the Progressive Party over the war. Let's say that without the war, Wallace stays a Progressive and runs as a third party candidate in 1952 and 1956.
Without the Korean War, Ike may not run in 1952. So the GOP chooses a Taft-Nixon ticket, which narrowly wins. (Why would Taft choose Nixon? Young, from an important state, a tough anti-communist, ideologically compatible with Taft but not an isolationist, etc.) Taft dies of cancer on schedule and Nixon becomes president.
So all we need is to have Humphrey get the Democratic nomination in 1956.
(There are all sorts of reasons this scenario is unlikely: for one thing, Wallace would probably have eventually broken with the Progressive Party even without the Korean War--he was getting increasingly concerned about the Communist Party's influence among the Progressives.)
Let's say there's no Korean War. In OTL, Wallace broke with the Progressive Party over the war. Let's say that without the war, Wallace stays a Progressive and runs as a third party candidate in 1952 and 1956.
Without the Korean War, Ike may not run in 1952. So the GOP chooses a Taft-Nixon ticket, which narrowly wins. (Why would Taft choose Nixon? Young, from an important state, a tough anti-communist, ideologically compatible with Taft but not an isolationist, etc.) Taft dies of cancer on schedule and Nixon becomes president.
So all we need is to have Humphrey get the Democratic nomination in 1956.
(There are all sorts of reasons this scenario is unlikely: for one thing, Wallace would probably have eventually broken with the Progressive Party even without the Korean War--he was getting increasingly concerned about the Communist Party's influence among the Progressives.)