As President, he saw the successful Paris Exhibition of 1900, and the forging of the Entente Cordiale with the United Kingdom of Great Britain and Ireland, resolving their sharp differences over the Boer War and the Dreyfus Affair.
Elected to the Chamber of Deputies in 1876 by Montélimar, he was one of the notable 363 parliamentarians who in the 16 May 1877 crisis passed a vote of no confidence in the ministry of Albert, the duke of Broglie.
His support of the second Jules Ferry ministry and his zeal for the colonial expansion of France gave him considerable weight in the moderate Republican party.
Loubet held the portfolio of the interior with the premiership, and had to deal with the anarchist crimes of that year and with the great strike of Carmaux, in which he acted as arbitrator, giving a decision regarded in many quarters as too favourable to the strikers.
He was defeated in November on the question of the Panama scandals, but he retained the ministry of the interior in the next cabinet under Alexandre Ribot, though he resigned on its reconstruction in January.
In that month President Loubet summoned Waldeck-Rousseau to form a cabinet, and at the same time entreated Republicans of all shades of opinion to rally to the defence of the state.
Feeling had run high between France and Britain over the mutual criticisms passed on the conduct of the South African War and the Dreyfus affair respectively.
These differences were composed, by the Anglo-French entente, and in 1904 a convention between the two countries secured the recognition of French claims in Morocco in exchange for non-interference with the British occupation of Egypt.
During the king of Spain's visit in 1905, an attempt was made on his life, a bomb being thrown under his carriage as he and with his guest left the Opéra Garnier.