CEDAR RAPIDS — Bret Nilles of Cedar Rapids has been elected to a fifth term as chairman of the Linn County Democratic Party.Nilles and other members of the county organization’s executive committee were elected at its biennial meeting following the 2021 off-year caucuses March 24.At a virtual meeting, the Central Committee also reelected Valerie Smith as the first vice chairwoman, Brianna Oxley as secretary and Susan Elliot-Bryan as treasurer.