With two special election wins in Uttar Pradesh, India's opposition parties may be working out a blueprint to challenge Prime Minister Narendra Modi's ruling Bharatiya Janata Party (BJP). Modi's party, in fact, lost three special elections for vacated seats in the lower house of Parliament on March 14. But the real significance of the losses lies in how they can shape India's opposition, which thus far has failed to unite to pose a serious challenge to Modi. The losses also underscore the importance of Modi as the BJP's star campaigner -- and therefore show the limits of the BJP on the state level without him....