If we go through a 8-year run...starting in 1964...with Goldwater running America...it is a vastly different place than today. Kissenger would never have been allowed to draw out the negoations and lengthen the war. By the end of 1965...B-52's would have gotten everyone to the table and wrapped up the mess before it started. The anti-war effort would never have occurred and Woodstock would have been just a simple meeting of a dozen bands...without significance. Joan Baez would never have been heard of...and the Smothers Brothers would have been held down to what they really were. The national park service would have found a very friendly Goldwater ready to enlarge the national parks and forrests. The Kremlin would have found a man very willing to go the distance and counter-balance whatever they were doing. Cuba likely would have fallen because an eventual 2nd Bay of Pigs would have been accomplished and been successful. Nixon would have found himself a newspaper editor job and never done anything else. By 1972, the economy would have been booming and a stronger America intact.
So write an alternate history novel about it.