Electing Sen. George McGovern as president in 1972 seemed possible to those whose hopes were dashed by the assassination four years earlier of Sen. Robert F. Kennedy during his presidential run. Mr. McGovern, who died Sunday at 90, lost the election to Richard Nixon. (Associated Press)

Electing Sen. George McGovern as president in 1972 seemed possible to those whose hopes were dashed by the assassination four years earlier of Sen. Robert F. Kennedy during his presidential run. Mr. McGovern, who died Sunday at 90, lost the election to Richard Nixon. (Associated Press)