Congress Vice President Rahul Gandhi launched the election campaign of Congress in party in Rajasthan by addressing a mammoth adivasi-kisan rally, in tribal-dominated Salumbar assembly constituency of Udaipur division. 'What we believe is that country cannot develop just by building roads, railway lines, airports and other things. Country will not move forward until the people who put in their hard work for building this infrastructure get sufficient food and adequate medical facilities. This is the difference between the Congress and other opposition parties,' said Rahul Gandhi and the crowd acknowledged it with huge cheers..