"If the Congress is worth its salt, it should stand by those who stood by late Prime Minister Indira Gandhi during her dark days," 83-year-old Sharief, whose claim for Bangalore Central seat was set aside in favour of Youth Congress wing Chief Rizwan Arshad, told PTI.
An eight-time Lok Sabha member, Sharief said he did not know why he was denied the ticket but it might be because Rahul Gandhi was searching for young candidates.
Sharief, who raised many an eyebrow in Congress recently by writing to party president Sonia Gandhi not to field a candidate against former Prime Minister and JDS supremo H D Deve Gowda, hinted at joining his party.
"I made the statement in good faith," Sharief said when asked whether his letter spelt trouble for him.
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On his future course, he said, "Why shouldn't I join JDS, CPI(M) or any other secular parties. I am not looking at any personal gains," he said.
On the chances of Congress in Lok Sabha elections in Karnataka, Sharief said it is a matter of serious concern for the party looking at a survey that projected that it would get six seats compared to BJP's 20.
At a news conference here, Gowda said, "If Sharief has confidence in us and wants to come to us, then I welcome him. It is left to him."