"I really enjoyed working with the people in the Democratic Central Committee and the people in the Democratic Party," she said. "I think we've strengthened the party I look for this November to be a big comeback year for the Democrats."
Rick Hemphill, chairman of the central committee, praised Hershey's service to the party.
"We accepted her resignation with, on the one hand regret, but on the other, she was able to get a good job over there," he said.
Hemphill said the party has voted to name Martin Radinsky the new vice chairman. Radinsky was a member of the central committee.
Angela Gum, who was an at-large member, will fill Radinsky's post on the central committee, Hemphill said. He said her at-large seat probably will not be filled until elections in September.
As vice chairwoman, Hershey played a key role in raising money for the party. She also was the first person to chair the Plowman and Fisherman Club, which sponsored three events a year that featured prominent elected Democrats.
In her new job, which she started about a month ago, Hershey is responsible for the implementation and compliance of the Americans with Disabilities Act in the nation's transit systems.