He was 55, family sources said.
Yadav was suffering from diseases like thyroid as well as other ailments for the last six months and was admitted to a hospital since last fortnight.
His last rites will be performed tomorrow at Bhaisoda Mandi, his ancestral village.
Yadav represented Garoth assembly seat in 2003 and also in 2014.
MP BJP President Nandkumar Singh Chouhan and its organisational General Secretary Arvind Menon, among others, expressed grief over Yadav's demise.