(CNN) Department of Homeland Security officials Tuesday encouraged voters to head to the polls and cast their votes, despite an ongoing Russian misinformation and disinformation campaign to influence voters and sow discord.

"This system is as secure as it's ever been,'' said Chris Krebs, director of the Department of Homeland Security's Cybersecurity and Infrastructure Security Agency. "Get out there and vote. Don't let the Russians get in your head."

Krebs said that at this point on Super Tuesday , there has not been an "acute increase" in misinformation, pointing out that it is a "steady state" flow of influence operations.

"The Russians never left in 2016; they continue to engage in this broad, large scale, disinformation influence operations," he said, speaking at the agency's election security coordination hub in Virginia. "The issues change, they ebb and flow, but we continue to work with our intelligence partners, with the social media partners."

The overarching objective of the Russian actors is to undermine broader confidence in the US political system, according to Krebs, who declined to provide specifics on the influence campaign.

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