Sénié succeeded his former schoolteacher as Mayor of La Bastide-de-Bousignac in 1947. His grandfather had served as Mayor from 1920 to 1929. In 2001, Jean Cazal, one of Sénié's municipal councilors since 1977, set up a rival coalition and put his re-election campaign in doubt. However, Sénié remained victorious, winning 65% of the vote.[3]
In 2008, Sénié was re-elected for the 11th time. However, the election results were annulled by Toulouse administrative tribunal on 6 June 2008.[4] The elections took place again on 20 July, resulting in a victory for Sénié with 66% of the vote.[5] On 15 June 2013, he, along with the rest of the municipal council, resigned in protest of the prefecture's decision to include La Bastide-de-Bousignac in the Communauté de communes du Pays de Mirepoix [fr], which would cause the commune to lose €145,000 in annual tax revenue.[6] He then began a hunger strike.[7] He was elected back into office on 21 July 2013.[8] He did not stand for re-election in 2014.[9]
Roger Sénié died on 11 September 2021 at the age of 101.[10]
^Cros, Jean-Philippe; Thomas, Jean-Charles (21 July 2008). "Élection municipale à La Bastide de Bousignac". La Dépêche du Midi (in French). La Bastide-de-Bousignac. Retrieved 14 September 2021.