McGovern never became president, and it's a darn good thing for America. His extreme anti-war views, support of abortion, and advocacy of bad science would have been disastrous for our country if he'd made it to the White House. On the other hand, you have a moderate Republican who supported most of the New Deal, helped save the world from Nazi tyranny, fought for civil rights, and stood strong against the Soviet Union.
Needless to say, Ike wins by lightyears.
McGovern's moderate views on abortion in 72 would disqualify him from being on a Democratic ticket today. And "advocacy of bad science"??