Jones was the top fundraiser among the Democrats, raising more than $1 million for his campaign, according to campaign finance reports.
Jones' campaign manager Rhonna-Rose Akama-Makia said in a statement that "voters now have a clear choice."
"We would love a healthy exchange of ideas but Sarah Sanders had made it clear that she is more focused on division and doing what's best for the connected few and her national reputation, and that's the truth," she said. "We have pressing challenges here in our state and being Governor is a job that has an immediate direct impact on people's lives. Arkansans need someone they can trust in office."