Nava entered government when he served as a legislative staff officer of the Guimaras Lone District, which was then represented by Edgar Espinosa during the 10th Congress of the Philippines.[2]
Nava was governor of the province of Guimaras from 1998 to 2007.[3] He later served as representative of Guimaras from 2007 to 2016. He returned as Guimaras governor after winning in the 2022 election.[4]
^Sornito, Ime. "Rahman Nava returns as Guimaras governor". Panay News. Retrieved March 5, 2023. Joaquin Carlos Rahman Nava is returning as Guimaras governor. He defeated rival Jose Ramon Cacho on May 9.... ....Nava is taking over from Gov. Samuel Gumarin who ran for mayor of Buenavista town