As a publicity stunt in the 1888 presidential campaign, supporters of Benjamin Harrison rolled a huge ball covered with campaign slogans halfway across the country.
Inscribed on the ball was:
"Old Allegany in 1840 started the ball for Harrison; In ’88 as they did then, We roll it on for Gallant Ben. Roll along, Roll away, Keep the ball in motion; The spirit of our men is up from Rocky Hills to Ocean."
The ball was a replica of one built for Harrison’s grandfather, William Henry Harrison, for his 1840 presidential campaign. The gimmick gave rise to the phrase, “Keep the ball rolling.” (Library of Congress Blog)