▁province ▁of ▁Nu oro . ▁ ▁A ▁member ▁of ▁the ▁Democratic ▁Party ▁of ▁the ▁Left , ▁in ▁ 1 9 9 5 ▁Gan au ▁was ▁elected ▁city ▁council or ▁of ▁S ass ari ▁and ▁lead ▁till ▁ 2 0 0 0 ▁the ▁Environment al ▁Commission ▁of ▁the ▁City ▁Council . ▁In ▁ 1 9 9 8 , ▁Gan au ▁joined ▁the ▁Democr ats ▁of ▁the ▁Left . ▁ ▁In ▁ 2 0 0 5 , ▁Gan au ▁became ▁the ▁centre - left ▁candidate ▁for ▁the ▁office ▁of ▁Mayor ▁of ▁S ass ari ▁and ▁won ▁at ▁the ▁first ▁round ▁with ▁the ▁ 5 8 % ▁of ▁the ▁votes . ▁Five ▁years ▁later , ▁in ▁ 2 0 1 0 , ▁Gan au ▁was ▁re - elect ed ▁Mayor ▁at ▁the ▁first ▁round ▁with ▁the ▁ 6 6 % ▁of ▁the ▁votes ; ▁according ▁to ▁a ▁ 2 0 1 0 ▁poll ▁published ▁on ▁Il ▁So le ▁ 2 4 ▁O re , ▁Gan au ▁ranked ▁as ▁the ▁fifth ▁most ▁popular ▁mayor ▁in ▁Italy , ▁while ▁in ▁ 2 0 1 1 ▁he ▁ranked ▁as ▁the ▁third ▁most ▁popular ▁mayor ▁in ▁Italy . ▁ ▁In ▁ 2 0 1 4 , ▁Gan au ▁left ▁his ▁mayor al ▁office , ▁one ▁year ▁before ▁the ▁natural ▁end ▁of ▁his ▁term , ▁in ▁order ▁to ▁run ▁at ▁the ▁S ardin ian ▁regional ▁election ▁for ▁the ▁Democratic ▁Party . ▁From ▁ 2 0 1 4 ▁to ▁ 2 0 1 9 , ▁Gan au ▁has ▁been ▁President ▁of ▁the