Unitary Democratic Coalition

The Unitary Democratic Coalition (CDU, Coligação Democrástica Unitária in Portuguese) is a coalition of left-wing political forces in Portugal, formed by the Portuguese Communist Party (PCP) and the Ecologist Party "The Greens" (PEV), normally including members of the Democratic Intervention (ID) association in their electoral lists.

Its symbol consists of two squares: in the left square is the hammer and sickle in red; a white five-pointed star outlined in red (PCP symbol); on white background. On the other hand, in the right square there is a sunflower with yellow petals and a brown center (symbol of the PEV) on a white background.

The CDU was formed in 1987, with the name "Coligação Democrástica Unitária" and the acronym CDU, heir to the United People's Alliance (APU), the previous electoral platform of the Portuguese communists, which was dissolved due to differences that arose between the parties that formed it.

Municipal policy

The CDU has some influence in Portuguese politics at the municipal level. In fact, in the districts of Beja and Setúbal it has almost all the mayor's offices. It also has a lot of representation and even some mayorships in the districts of Évora, Portalegre, Lisboa, Santarém and Leiría.

Election results

Date	Votes	%	Deputies	+/-	Candidate	Note
1987	689 137	12.14 (3.o)	31/250	7a	Alvaro Cunhal	29 PCP and 2 PEV seats
1991	504 137	8,80 (3.o)	17/230	14	Alvaro Cunhal	15 PCP and 2 PEV seats
1995	506 157	8,57 (4.o)	15/230	2	Carlos Carvalhas	13 PCP and 2 PEV seats
1999	487 058	8,99 (3rd)	17/230	2	Carlos Carvalhas	15 PCP and 2 PEV seats
2002	379 870	6,94 (4.o)	12/230	5	Carlos Carvalhas	10 PCP and 2 PEV seats
2005	433 369	7.54 (3.o)	14/230	2	Jerónimo de Sousa	12 PCP and 2 PEV seats
2009	446 994	7,86 (5.o)	15/230	1	Jerónimo de Sousa	13 PCP and 2 PEV seats
2011	441 852	7.91 (4.o)	16/230	1	Jerónimo de Sousa	14 PCP and 2 PEV seats
2015	445 980	8,25 (4.o)	16/230	1	Jerónimo de Sousa	15 PCP and 2 PEV seats
2019	332 473	6.33 (4.o)	12/230	4	Jerónimo de Sousa	10 PCP and 2 PEV seats
2022	238 962	4,30 (6.o)	6/230	6	Jerónimo de Sousa	6 PCP seats

^a Regarding the result of APU in 1985.