If you want to put it that way, few if any people in elected office have been chosen by over 50 percent of adults.
However, of those who bothered to participate in the Democratic process...
(BTW--Bush got 52 percent in 2004.)
I know, and Bill Clinton had over 50% of the voters vote against him in both of his victories, and Dubya not only had less than 50% vote for him in 2000, but he also came in 2nd in the popular vote.