Everything I have read and been told by some pretty major actors in the US government during that time period. Plus two men who worked for both JFK and RFK . One guy who became a US Senator all three of them said these things. 1. RFK wanted to be VP in 64. 2. He was loyal to the party. 3. He hated LBJ but Nixon was the enemy on the other side and he did not want him to ever be President. So after talking to one of those guys last night, Senator McGovern I think he would have taken the VP job in 68. Before hand I did not think so. Now there memory of everything is more than 40 years old. But they are primary scources.