In an outcome unmatched over the last 40 years, the Bharatiya Janata Party (BJP) won 312 out of 403 (77.4%) seats in India’s largest state assembly in its most-populous state, increasing its vote share by 25 percentage points from the 2012 assembly elections to 39.7% in 2017.
The BJP almost repeated its performance from the 2014 parliamentary elections, when it won 42.7% votes and 73 (more than 90%) of 80 Lok Sabha seats. Despite the effects of demonetisation and the perception that voters behave differently in parliamentary and assembly elections, it would take a historic vote swing favouring the Samajwadi