Prime Minister Narendra Modi today congratulated all BJP workers and leaders for the impressive victories in Madhya Pradesh, Assam and Arunachal Pradesh in by-poll election. In a tweet, Mr Modi thanked people for the continued faith in the BJP's unwavering focus on development and good governance.<br/><br/>He also congratulated Tripura BJP workers for an impressive performance in the by-polls. Mr Modi said, he is happy to see expansion of BJP base in the Northeast. He also appreciated West Bengal BJP workers for the spirited performance.