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General elections were held in Portugal on 28 April 1918, following a coup by Sidónio Pais in December 1917.^[1] The elections were boycotted by the Democratic Party, the Evolutionist Party and the Republican Union, who had won over 90% of the seats in the 1915 elections.^[2]

Although they included the first direct vote election for the position of President, Pais was the only candidate and the vote was uncontested.^[3] In the parliamentary elections the result was a victory for the National Republican Party, which won 108 of the 155 seats in the House of Representatives and 32 of the 73 seats in the indirectly elected Senate.^[4][5]

Party		Votes	%	Seats	+/–
	National Republican Party			108	New
	Monarchist Cause			37	New
	Portuguese Catholic Centre			5	4
	Other parties and independents			5	–8
Total				155	–8
Registered voters/turnout		900,000	–
Source: Nohlen & Stöver

Party		Votes	%	Seats	+/–
	National Republican Party			32	New
	Monarchist Cause			10	New
	Portuguese Catholic Centre			1	0
	Other parties and independents			30	+27
Total				73	+4
Registered voters/turnout		900,000	–
Source: Nohlen & Stöver

Pais was assassinated in Lisbon on 14 December.^[3] On 16 December João do Canto e Castro was elected by parliament for a "transitional term".^[1][6]

• Eleições de 1918