If Pete Buttigieg, 37, won the U.S. presidency, he would be the youngest person to hold the office. But so far, his campaign appeals slightly more to older voters than younger ones. Above, he speaks on Sept. 16 in Galivants Ferry, S.C.

If Pete Buttigieg, 37, won the U.S. presidency, he would be the youngest person to hold the office. But so far, his campaign appeals slightly more to older voters than younger ones. Above, he speaks on Sept. 16 in Galivants Ferry, S.C.