The same email of Robinson’s that was used to set up an Ashley Madison account was also used to start a Duolingo account to learn the language of Goethe (and Hitler).

He wished he could join the KKK, supported slavery, and bashed Martin Luther King Jr., all on an old porn website where he used to write.

Mr. Robinson, the Republican nominee for governor of North Carolina, vowed to stay in the race and sought to deny the report, which also said he had defended slavery in online posts years ago.