Mr Shah began his fourth round of visit to the poll-bound Karnataka with a tour of old Mysuru areas, asserting that Siddaramaiah and JDS would receive the "biggest shock of their lives" from the region in the May 12 assembly polls.
"It is said that the BJP is a bit weak here (Old Mysuru region), but after seeing the work of the party workers, I expect Siddaramaiahji and the JD(S) to get the biggest shock of their lives from this (Old) Mysuru region," he told a party convention.
Amit Shah is presently covering the districts of Mysuru, Chamarajanagara, Mandya and Ramanagara, where BJP had not won even a single seat in the previous election.
The principal challenger to the ruling Congress is JDS in these districts.
Referring to his gaffe at Davanagere earlier this week, Mr Shah said though he had committed a mistake in his speech while referring to Siddaramaiah's corruption, people of the state would not do the same because they knew Siddaramaiah's rule well.
"Siddaramaiah and Rahul Gandhi were very happy over my gaffe while speaking about Siddaramaiah's corruption. I had made a mistake, but the people of Karnataka will not make it, because they have understood Siddaramaiah's government very well," he said.
In a slip of the tongue at a press conference at Davanagere while attacking the Siddaramaiah dispensation as the "most corrupt" one, Amit Shah had said the Yeddyurappa government would get the number one award in corruption.
He had, however, corrected himself after being prompted by BJP lawmaker Prahlad Joshi, who was seated next to him.
Mr Shah also accused Siddaramaiah of playing with Karnataka's pride by not celebrating the "jayanti" of noted Kannada poet Kuvempu or renowned engineer Sir M Vishveswaraiah.
"Siddaramaiah only remembers to celebrate the jayanti of Tipu Sultan (the 18th-century ruler of Mysore) to get votes," he said.
Amit Shah also met the Wadiyar royal family of Mysuru today at their private palace, triggering speculations about their support or joining the BJP.
Amidst speculations in the media,Yaduveer, the 27th "King" of the Wadiyar dynasty, recently ruled out his political entry.
"I have told several times that I'm not interested in politics. There is no chance at all of me joining any party. I'm not interested in politics. Through social work, we will continue our relationship with the public," he said.
The BJP president also said that his party, if voted to power, would make efforts to hunt down the killers of RSS and BJP workers in Karnataka, and hand out the most severe punishment to them.
"I would like to tell the people of the state that Siddaramaiah's time has come to an end. Soon after BJP forms the next government under Yeddyurappa's leadership, it will make all efforts to hunt down killers (of RSS and BJP workers) from any corner of the world," he said.
Mr Shah was speaking to reporters after meeting the family of BJP worker Raju, who was hacked to death in March 2016.
"They will be sent to jail and handed out stringent punishment," he added.
"In politics, there is no room for violence. If Siddaramaiah and his government think they can stall our ideology from spreading, then he is mistaken," he said.
Continuing BJP's bid to reach out to the prominent Lingayat community, Amit Shah began his fourth leg of Karnataka visit by meeting it's prominent pontiff at Suttur Mutt in Mysuru.
"Took blessings of Sri Shivarathri Deshikendra Mahaswamiji of Sri Suttur Math in Mysuru," he tweeted after his meeting with the seer.
Took blessings of Sri Shivarathri Deshikendra Mahaswamiji of Sri Suttur Math in Mysuru. Swami ji has made significant efforts towards spreading the values of Indian culture & tradition worldwide. I also admire Matha's role in providing education to the poor in rural Karnataka. pic.twitter.com/SG813sBFB2— Amit Shah (@AmitShah) March 30, 2018
The BJP president had begun his third leg of tour on March 26 by seeking blessings of 111-year old Sri Shivakumara Swami of Siddhaganga Mutt in Tumakuru, a revered seer of the Lingayat community.
The meeting with the Lingayat seers is being seen as an attempt to reach out to the Lingayats / Veerashaivas, who are numerically and politically powerful in the state and form a major voter base for the BJP.
The visit assumes significance as it comes in the backdrop of the Siddaramaiah government's move to recommend the centre to accord a religious minority tag to Lingayats and Veerashaiva Lingayats in an attempt to wean away a section of them from the BJP.