Qual é a justificação para não termos Passos nem Portas nos outdoors, cartazes e afins da Coligação PSD/CDS?

http://expresso.sapo.pt/legislativas2015/2015-09-22-Coligacao-evita-outdoors-com-Passos-e-Portas-2

The Cure
Echo & the Bunnymen
Joy Division
Lene Lovich
New Order
Siouxsie and the Banshees
Talking Heads
Bauhaus
The Birthday Party
Cabaret Voltaire
The Cramps
The Creatures
Depeche Mode
The Mekons
The Psychedelic Furs
Violent Femmes
Nick Cave
The Chameleons UK
Nina Hagen
The Jesus and Mary Chain
The Lords of the New Church
New Model Army
Simple Minds