Some historians suggest that Quadros was heavily drunk when he signed his resignation letter, while others suggest that Quadros felt that Congress would not accept his vice-president as president, and would ask for his return.
Beberapa sejarawan menyatakan bahwa Quadros adalah sangat mabuk ketika ia menandatangani surat pengunduran dirinya, sementara yang lain menunjukkan bahwa Quadros merasa bahwa Kongres tidak akan menerima nya wakil presiden sebagai presiden, dan akan meminta untuk kembali.