YSR Congress chief YS Jaganmohan Reddy on Thursday said the party would support whoever promises Andhra Pradesh the special category status.
"Whoever signs the special category status file will get our support," Reddy told the media in Prakasam district.
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He said both the Congress and the Bharatiya Janata Party (BJP) had cheated Andhra Pradesh by promising but not granting the special category status.
The BJP-led NDA government ruled out special status to Andhra, citing 14th Finance Commission report not to grant special status to any state.
Meanwhile, Congress president Rahul Gandhi has announced that his party would grant special status to Andhra Pradesh if voted to power.
Reddy also challenged CM N. Chandrababu Naidu to move a no-confidence motion against PM Narendra Modi's government.
"Either you move the motion and we will support or we move it and you support", he said.