Well, Humphrey did an excellent job of winding up the war: the bombing campaign on Duck Hook was so intense that NV sued for peace in late '70. Now there's a Korean-style armistice in place.
I don't know about the Vietnam War, but I do know that NASA dodged a bullet with Humphrey's victory. Nixon hated Kennedy, and would have pulled the plug on the Apollo Applications Program just to spite JFK's memory.