Yolanda Couceiro Morín, a town hall candidate for right-wing party Party for Freedom - Clean Hands (Partido por la Libertad - Manos Limpias) appears on the campaign poster partially naked, her modesty covered by the slogan 'politicians have left us stark naked'.
Morín called the campaign "eye-catching" and said she hoped it got into the consciousness of the people of Portugalete and helped make them "focus on the problems of their neighbours", reported Spanish daily, 20 minutos.
Portugalete is a town on the Estuary of Bilbao, just went of Bilbao in the Basque Country. The town is currently run by Mikel Torres, the mayor from the Socialist Party of the Basque Country.
Morín said that she and her party "want to position ourselves at the centre of attention in the town to be a real alternative to the parties of 'the caste' (la casta)".
The "casta" has become a buzzword, particularly among supporters of left-wing protest party Podemos, who use it to refer to the traditional political elite, or "caste".
Morín is the only candidate for the Party for Freedom - Clean Hands in the Basque Country, but there are 100 candidates running in municipalities across Spain.
Morín emphasized that the Party for Freedom was "directly involved in the cleaning up of Spanish politics".
The far-right pressure group Manos Limpias certainly has no qualms about going after high profile figures. In December 2013 Manos Limpias launched a fraud lawsuit against Princess Cristina, the sister of now-King Felipe.
The party also famously filed a lawsuit against Judge Baltasar Garzón, who investigated crimes against humanity committed by the regime of Spanish dictator, Francisco Franco.
The party claimed that Judge Garzón should stop the investigation because it contravened the 1977 amnesty law and that he could not retroactively investigate war crimes (the Spanish Civil War took place before 1940 whereas the idea of crimes against humanity did not enter into international law until 1945).
Morín is not the first Spanish politician politically motivated to get her kit off.
In 2006, Albert Rivera launched his new party, Ciudadanos (Citizens) by releasing a campaign poster of him completely naked.