Kickstarting the BJP state unit's "Nava Karnataka Nirmana Parivarthana Yatra" at a rally here, he claimed that a survey had found that the state government was the "most corrupt" in the country.
Shah described state BJP chief B S Yeddyurappa, who is spearheading the yatra, as the prospective chief minister and claimed that the 'yatra" would lead to the ouster of the Siddaramaiah government.
Shah alleged that the funds released by the central government to the state were not reaching the people they were intended to benefit.
"The government is more interested in celebrating November 10 as Tipu Jayanti rather than celebrating Kannada Rajyotsava (state formation day which fell yesterday) with grandeur," he claimed.
The BJP has been opposing the event as it sees Tipu Sultan as a "religious bigot" and a "brutal killer".
The 75-day yatra, launched at the Bangalore International Exhibition Centre grounds off Tumakuru road, is aimed at "exposing" the alleged misdeeds of the Congress government.
A galaxy of national leaders, including Home Minister Rajnath Singh, Finance Minister Arun Jaitley and Uttar Pradesh Chief Minister Yogi Adityanath, are expected to take part in the yatra at different places.
During the yatra, BJP leaders will hold public meetings in each assembly constituency, and present an alternative agenda for development.
The BJP is eyeing to capture power in the assembly polls in Karnataka due early next year. The party had installed its first-ever government in the South in 2008.
The rally will culminate in Bengaluru on January 28 and it will be addressed by Prime Minister Narendra Modi.
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