1921 Portuguese legislative election

← 1919 10 July 1921 1922 →
163 seats to the Chamber of Deputies 82 seats needed for a majority
First party Second party Third party   Leader António Granjo Afonso Costa Álvaro de Castro Party PLR PD PR Leader since 1919 1912 1920 Last election 55 seats[n 1] 86 seats New Seats won 79 54 12 Seat change 24 32 New   Fourth party Fifth party Sixth party   CM CCP PR Leader António Lino Neto Party CM CCP PR Leader since 1915 Last election New 1 seat New Seats won 4 3 2 Seat change New 2 New
Prime Minister before election Tomé José de Barros Queirós PLR Prime Minister after election António Granjo PLR

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Parliamentary elections were held in Portugal on 10 July 1921.^[1] Prior to the elections, the Republican Union had merged with the Evolutionist Party to form the Republican Liberal Party (PLR).^[2] The elections resulted in the PLR becoming the largest in Parliament, winning 79 of the 163 seats in the House of Representatives and 32 of the 71 seats in the Senate.^[3]

The government that was subsequently formed lasted only a few months, as on 19 October (the "night of blood"), a military coup resulted in the deaths of several prominent conservative figures including prime minister António Granjo.^[2] New elections were held in January 1922.

Results

Party	House of Representatives				Senate
	Votes	%	Seats	+/–	Votes	%	Seats	+/–
Republican Liberal Party			79	+24			32	+5
Democratic Party			54	–32			22	–14
Reconstitution Party			12	New			7	New
Monarchist Cause			4	New			0	New
Catholic Centre Party			3	+2			3	+2
Portuguese Socialist Party			0	–8			0	0
Regionalist Party			2	–				–
Other parties and independents			9	–			7	0
Invalid/blank votes		–	–	–		–	–	–
Total			163	0			71	0
Registered voters/turnout			–	–			–	–
Source: Nohlen & Stöver