The chief minister also ruled out any impact of Gujaratpoll results on Karnataka, saying the issues in the state were different.
Siddaramaiah said he had spoken to some experts and there were chances that the EVMs could be tampered with.
"They (BJP) have the power. The Election Commission is under them. Though it is an independent constitutional body, they (central government) appoint the chief election commissioner," he said to a query about allegations of EVM tampering.
Apprehension about possible EVM tampering through bluetooth technology was raised by the opposition Congress duringthe recent assembly elections in Gujarat, which the ElectionCommission had termed "baseless".
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Similar doubts about the credibility of EVMs were raised during recently concluded civic polls in Uttar Pradesh and assembly elections earlier this year.
Pointing out that the demand for the old system was raisedduring the Uttar Pradesh assembly polls by political leaders there, Siddaramaiah said, "Go to the ballot paper. What is the problem with it?"
"We will both meet and write to the Election Commission on this. We demand that elections in Karnataka be conducted using ballot papers," he added.
On possible impact of Gujaratpoll results on Karnataka, he said, "Results of any state will not have any impact on the results of another state....issues there are different from our state. So there is no relation to one another. So it cannot be said."
Asked about the exit polls predicting a win for the BJP in Gujaratand Himachal Pradesh, Siddaramaiah said the counting is yet tohappen, adding, "this are just exit polls."