At the 1968 Republican National Convention , Winthrop Rockefeller received backing from members of the Arkansas delegation as a " favorite son " presidential candidate . He received all of his state 's 18 votes ; his brother Nelson , then concluding a major presidential bid against Richard M. Nixon , received 277 . This was the only time in the 20th century that the names of two brothers were placed into nomination at the same time
1968 Republican National Convention
1968 Republican National Convention
Winthrop Rockefeller