Symington would have been good, perhaps Al Gore Sr., Ralph Yarborough of Texas, Robert Byrd would have been good, too.
I think the key would have been a Southern or border state Democrat, and you had Gore, Sr., Yarborough and Connelly, Byrd (and the Klan stuff would have come out, suppressing Black turnout), Symington (whom I was related to by marriage), but also Sam Irvin or even Herman Talmagde.
Ervin was too old, he was 71 at the time, and Talmadge was even more of racist than Byrd ever was. Humphrey would not have gotten by with someone from the Deep South, from SC to MS, he could only have used someone from WV, VA, NC, TN, FL, LA, TX, AR, MO, or KY. Anyone from the Deep South would have been subject to charges of racism.
