In the 1995 municipal elections in Chartres, he was one of Mathieu Brétillard's running mates, who later joined Jean-Pierre Chevènement's Republican Pole, which he has since left.

In 1998, Jean-Pierre Gorges ran for the General Council of Eure-et-Loir, in the Canton of Chartres-Nord-Est, on a list with the label "Divers droite".

Jean-Pierre Gorges formed a dissident list supported by Démocratie libérale, bringing together personalities from the RPR, the UDF and the MPF as well as from civil society.

On the initiative of Jean-Pierre Gorges, the agglomeration abandoned the COMACh sign in favour of the name "Chartres Métropole".

"The repetition of these events within a short period of time is of the nature of a manoeuvre which, in view of the small difference in the number of votes (57), altered the result of the election", the Constitutional Council ruled.

Jean-Pierre Gorges was, in January 2016, one of the four candidates for the presidency of the Nous Citoyens[7] party, but withdrew before the start of the election.

On Friday 10 September 2021, the mayor of Chartres received the candidate for the right-wing primary Valérie Pécresse in view of the 2022 French presidential election.

At the exit of a city council on 22 November 2018, Jean-Pierre Gorges threatens Paul Larouturou of the French TV show Quotidien, as the journalist was questioning him about the mayor's recent refusal to set up a logistics company.

[8][9][10][11][12] On 29 January 2021, he was convicted by the judicial court, for public insults against the ecologist city council Quentin Guillemain, to whom he had said he "deserved two slaps".

[13][14][15][16] On 17 March 2021, during a municipal council meeting, the mayor made dismissive comments about climate science, reported by the opposition.