He also got a 76% YES vote, which would be more than enough to elect any senator, representative, or to pass any piece of basic legislation pretty much anywhere.
Not quite the same. 76% includes everybody who didn't vote, as well as "broker" votes, which are also counted as yes's. In political elections, non-voters simply don't count. In this case, they count as "yes".
He did not get 76% of the votes actually cast.
Steve Case left AOL/TW after getting a 22% withhold vote. Mitchell gets 24%, and they make him Chariman?
24% withheld their vote for him to even BE on the board.
I've never quite understood why a simple majority doesn't work in the business world,
Because if even 20% of your stockholders are peeved, and sell, everybody gets the shaft. And again, they don't do the elections like political elections, only counting the votes actually cast. Even further, the biggest shareholders are often the board themselves.
Again, Steve Case got a 22% withhold.
...but in the context of 100%, 24%, while significant, is certainly not a death knell.
But as has been shown, that's not the relevant context.