Gangtok : Sikkim BJP president DB Chauhan has congratulated Prime Minister Narendra Modi and National President JP Nadda, as well as all the other ministers, on their election victory. At the party meet at Singtam, today strengthening membership, party and future strategy. Vice President of the State unit, S B Karki, MLA YT Lepcha and S T Venchungpa also took part in the meeting. Celebrations on the occasion of Foundation Day,6th April discussed.’It will be celebrated at District level. Committees for Celebrations were constituted on Monday, said Raju Giri, party executive member. All the party functionaries have been urged to start preparations for success.