Indian Prime Minister Narendra Modi’s ruling Hindu nationalist party on Monday wrested control of the state of West Bengal, an opposition stronghold, in a key election. The Election Commission of India released partial results showing the Bharatiya Janata Party won at least 124 seats in the 294-member West Bengal assembly, and was leading in 83 others. Final results are expected on Monday evening. It would be a significant breakthrough for Modi’s party, which had tried for years to dislodge the...