He accused the BJP of raking up divisive issues like Uniform Civil Code, Ayodhya and abrogation of Article 370 and people will reflect upon all these issues while voting.
Refusing to get into a discussion whether Modi as BJP's prime ministerial candidate would be good or bad for Congress, he said his party was not fighting any individual but an idea represented by BJP which was rejected in 2004 and 2009.
He mocked at the elevation of Modi as election campaign committee chief, saying he was such a divisive person that there is a "lot of rebellion" within his party, starting from the top, apparently referring to the resignation by L K Advani.
"We think Mr Modi is a very divisive figure, which is why there is a lot of rebellion within his party. For the first time I have seen there is a rebellion starting at the very top," Chidambaram told PTI.
"I think there are large sections of people in the country who will be very apprehensive of voting for the BJP if Mr Modi is their candidate. But that is the choice they have to make. But once they make their choice, the people will make their choice," the senior Congress leader added.
He was responding to a question whether Modi as BJP's prime ministerial candidate would be good for the Congress.
"I think this is not a valid argument. Who will be the BJP's candidate is their concern. Who will the people vote for is our concern, is everybody's concern," he said.
Chidambaram stressed that Congress was "not fighting against a candidate" but is pitted against other parties in terms of what its idea of India is.
"Our idea of India is an India that is secular that believes in inclusive growth. An India that does not leave behind any section, especially the more disadvantageous sections.
"The BJP's idea of India is a very different idea of India and that was roundly defeated in 2004 and 2009. In 2004, it was defeated even when they were led by the formidable Mr Vajpayee. They didn't accept the fact that the six years he had given a kind of governance which deserved another term. They rejected it," he said.
In an apparent dig at Advani, Chidambaram said in 2009, people of the country rejected "someone who was presented as a strong leader as against someone who was painted falsely as a weak leader. The people once again rejected their idea of India."
Attacking BJP's policies, he said, "I don't think they are reflecting on what the idea of India should be. They are persisting with the old idea of India, which was rejected in 2004, which was rejected in 2009 and I'm sure if they repeat that idea of India and in an even more distorted manner, under an even more divisive leader, it will once be defeated again in 2014."
Asked if Congress was afraid of facing a "stronger" leader in the form of Modi, Chidambaram said, "I don't know who is stronger or who's weaker. We had a 'louh purush' (iron man) in 2009, but we got 61 more seats. They got fewer seats than they had previously."
The comment was yet another dig at Advani who was showcased by BJP as a "strong man" pitted against "weak" Manmohan Singh.
"Stronger or weaker are all part of the myth-making and I'm afraid the media is becoming drawn into this myth-making," he said.
"The BJP, if it sticks to its idea of India which was rejected in 2004 and 2009, thinks it poses a challenge, but let me remind you that that idea of India was rejected twice in 2004 and 2009," he added.
Hitting out at BJP, he said its president was "mocking at secularism" by calling it 'secularitis', a disease. "It shows that they have no faith in secularism."
He also referred to Advani's recent statement, calling for repeal of Article 370 (which grants special status to Jammu and Kashmir) and talking about Uniform Civil Code.
"Some other BJP leaders say demolition of Babri Masjid was right and temple should be built at that place," he said, adding "It means BJP has not changed its spots. You think people of India will not reflect on all this?
He emphasised that howsoever "noisy and loud our democracy may be, it must be secular and genuinely, deeply and unwavering to inclusive growth."
Conceding that there could be problems in the UPA government, he said, "Nobody is denying that. There will be successes and failures but ultimately people vote for... ultimately people vote not according to their immediate interests but in the interest of future of their children and grand children, to preserve the idea of India."
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