Simplify the following text for a Grade 10 native English-speaking person.
Original: In 1954 , Tammany Hall boss Carmine DeSapio defeated Roosevelt 's son , Franklin D. Roosevelt , Jr. , during the New York Attorney General elections .
Simplified: In 1954 , Carmine DeSapio campaigned against Eleanor 's son , Franklin D. Roosevelt , Jr. , during the New York Attorney General elections .