Delhi Chief Minister Arvind Kejriwal took a swipe at the BJP today over the CBI action on his deputy Manish Sisodia as a plan by the centre to hurt the Aam Aadmi Party, but one that will backfire. "AAP's vote share is up by 4 per cent in Gujarat since the raid on Manish Sisodia. It will increase to 6 per cent when he's arrested," Mr Kejriwal said amid preparations for the assembly election in Gujarat, Prime Minister Narendra Modi's home state, due later this year.