Bihar Chief Minister Nitish Kumar today vowed to keep up the pressure for his state's special status demand and hinted that the issue could determine which alliance his party, the Janata Dal (United), would back after the 2014 general elections. "Special status should be based on the backwardness of a state. The states that have got special status right now are far developed than Bihar. Special status is our right and we are determined to continue our struggle," Mr Kumar told supporters at his Adhikar rally in Patna.