How did 'OK' come about?

There may be more stories about the origin of ''OK'' than there are uses for it. A more likely explanation is that the term originated as an abbreviation of orl korrekt, a jokey misspelling of 'all correct' which was current in the US in the 1830s. The oldest written references result from its uses as a slogan by the Democratic party during the American Presidential election of 1840.