Service members of LPR militia queue to cast their votes during the referendum on the joining of the Luhansk People's Republic to Russia, in Luhansk, Luhansk People's Republic. The people's republics of Donetsk and Luhansk (DPR, LPR), as well as the Russian-controlled parts of the Ukrainian regions of Zaporizhzhia and Kherson launch referendum procedures on joining Russia that will run through September 27.