The current name is "Partit de la Nacion Occitana" (in English: "Occitan Nation Party").
Thus, Occitan nationalism draws its sources from the Félibrige of Frederic Mistral, who since the second half of the 19th century worked for the recognition of the Occitan language in the southern part of France: before that, "la langue d'oc" was just considered as a degenerate form of French ("patois").
In fact, Occitania is also divided into 7 historical counties too: Guyenne, Gascony, Provence, Dauphiné, Auvergne, Limousin, Languedoc.
Guy Héraud, co-author of "Ethnism" with his friend François Fontan, gets less than 0.08% of the votes, the lowest score ever obtained by a candidate in a French presidential election.
The PNO obtained its best results at the municipal elections, in 1978 in Fraisse (Italy) or in 2014 in France (with the regionalist movement "Bastir!").