SIOUX FALLS — South Dakota’s Democratic U.S. Senate nominee ended his campaign Tuesday, Aug. 4. ADVERTISEMENTThe deadline for the state Democratic Party Central Committee to nominate a replacement candidate is Tuesday, Aug. 11. Party officials did not immediately provide a response to South Dakota Searchlight questions on Tuesday evening. Hildebrand had said there’s a stigma associated with the Democratic brand in South Dakota that would prevent Beaudion from winning, and Jarding said “the Democratic brand in South Dakota is dead.” The gap between registered Republican and Democratic voters in South Dakota has widened in recent years, and Republicans now outnumber Democrats 2.5 to 1.