When former rivals Mayawati and Akhilesh Yadav announced a tie-up in Uttar Pradesh for the national elections this morning, their target was clear - the BJP, which decimated the two UP powerhouses in the 2014 elections. Bahujan Samaj Party chief Mayawati claimed the alliance will give sleepless nights to Prime Minister Narendra Modi and BJP president Amit Shah. "This (the alliance) will give guru-chela PM Modi and Amit Shah sleepless nights," she said. Though it is expected to be a major headache for the BJP, which lost three major state elections recently, Uttar Pradesh Chief Minister Yogi Adityanath seems unfazed.