In this capacity he was municipal councillor in Ravenna from 1983 through 1995, when he was first elected to the Legislative Assembly of Emilia-Romagna and co-opted in the Regional Government as under-secretary to the Presidency.

[4] In the 2010 regional elections the centre-left lost its majority in the Conference and Roberto Formigoni, longtime President of Lombardy, claimed the post.

Errani was nominated Special Commissioner for the reconstruction, by the Prime Minister Monti and the chief the Protezione Civile Franco Gabrielli.

[12] In 2012, Vasco Errani was placed under investigation, because the cooperative "Terremerse", owned by his brother, had received a loan of one million Euros, out of public funds controlled by the Regional administration of Emilia-Romagna, for the construction of a factory farm.

On 8 November 2012 Errani and his fellow accused were acquitted because the facts were not those alleged by the prosecutor ("... perché il fatto non sussiste").