Table schema:
CREATE TABLE table_name_73 (first_elected INTEGER, home_city_town VARCHAR, party VARCHAR, district VARCHAR)

Question: Which First elected is the highest one that has a Party of dem, and a District larger than 24, and a Home city/town of berlin?
SQL: SELECT MAX(first_elected) FROM table_name_73 WHERE party = "dem" AND district > 24 AND home_city_town = "berlin"