Suleiman Frangieh dealt with the family's export-import business in Beirut for a time before his political career. In 1960, Frangieh was elected to his elder brother
Hamid's old seat in the Lebanese Parliament. He also became the head of his clan due to Hamid's illness. In the closest and possibly most controversial presidential election in
Lebanese history, the
National Assembly elected Frangieh to the Presidency of the Republic on 23 September 1970. He owed his upset victory over
Elias Sarkis, the official candidate of the
Chehabi regime, to a last minute change of mind by
Kamal Jumblatt, whose supporters in the Parliament switched their votes to Frangieh. declaring Suleiman Franjieh President of
Lebanon in 1970 Posing as a consensus candidate, Frangieh drew support from both the right and the left and from all religious factions; his election was a backlash to the administrations of Presidents of
Fuad Chehab (1958–1964) and
Charles Helou (1964–1970) and the "Deuxième Bureau" () run by the preceding two administrations of Chehab and Helou, as the opposing candidate Elias Sarkis who was head of the
Banque du Liban (Central Bank of Lebanon) was widely seen as a continuation of the earlier
Chehabi regime. There were three rounds of elections that year: Round 1 – 99 Deputies, 5 candidates – no majority Round 2 – 99 Deputies, 2 candidates – 50 votes each (1 fake vote found), round was negated. Round 3 – 99 Deputies, 2 candidates, Kamal Jumblatt assigns one of his deputies to vote for Frangieh. Suleiman Frangieh becomes President legally. The events listed above as per the testimony of the late Kamal Joumblatt of his role in the vote.
Sabri Hamadeh, then Speaker of Parliament, had refused to announce the election of a President on a 1-vote difference. As Hamadeh exited parliament
Michel Sassine, Deputy Speaker of Parliament, stepped up and exercised his powers of Deputy to announce Frangieh President. Frangieh's term lasted until 22 September 1976. ==Civil War years==