A former sergeant with the Cobb County Sheriff’s Office has announced his intention to challenge Sheriff Neil Warren over leadership of the agency in the 2020 election.

Jimmy Herndon, a Democrat, launched his website and fundraising campaign over the weekend. His platform, as described on his website, emphasizes financial accountability, transparency, employee morale and community trust.

While 2020 qualifying isn’t until next year, Cobb is expected to be highly competitive in many races and candidates have already begun fundraising and campaigning.

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David Palyok, 68, is seen taking his ballot at the River-Green subdivision in Canton during the special election for the state senate seat in Cherokee on Tuesday, August 26, 2025, to fill the remainder of former state Sen. Brandon Beach’s term, which runs through January 2027.  (Miguel Martinez/ AJC)

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Donald Trump's administration deployed the military to Washington, D.C., in the name of fighting crime, and in an Aug. 11 news conference he mentioned the possibility of military being sent to other large American cities, all of which are led by Black, Democratic mayors. And while Atlanta wasn't included in Trump's list, the city fits that profile under Mayor Andre Dickens. (Photo Illustration: Philip Robibero / AJC | Source: Getty)

Credit: Philip Robibero