Prime Minister Narendra Modi, party president Amit Shah and chief ministers of National Democratic Alliance-ruled States are at the ceremony.
Modi claimed the Janata Dal-Secular-Congress coalition government which came to power in Karnataka recently had waived only 800 farm loans.
Could a grand alliance between the Samajwadi Party, Bahujan Samaj Party and Congress -- built along the lines of the successful Bihar mahagatbandhan of 2015 -- have changed the outcome of the Uttar Pradesh election?
Opposing the verdict, several Dalit organisations called for a 'Bharat bandh' on Monday.
In UP, the BJP focused carefully on the sub-caste divisions within the Dalits and also gave a large number of tickets to SC candidates from sub-castes.