No. McGovern lost to Nixon in a landslide after switching running mates during the campaign.
Tell me if I'm wrong, but I don't think that JFK, LBJ, Carter, or Clinton ever switched running mates during their campaigns.
Your message #62:
‘is anyone worried about the dems pulling another Torch gambit and replacing Biden with Hillary?’
“Nope. The Dems know all too well what happened the last time they did that.”
I thought you were referring to the “Torch gambit”.